True Blue
Also known as: Vesper , Medium Blue , Evil Eye , Lady of the Sea
True Blue brings a cool and professional feel to a palette. This medium blue suits SaaS products and finance apps. Its complement lands in brown territory, which makes for striking two-color pairings. It's dark enough to use for text on white backgrounds (10.82:1, passes WCAG AA).
Reference
True Blue color codes
- HEX
- #010FCC
- RGB
- rgb(1, 15, 204)
- RGBA
- rgba(1, 15, 204, 1)
- HSL
- hsl(236, 99%, 40%)
- HSV
- hsv(236, 100%, 80%)
- CMYK
- cmyk(100%, 93%, 0%, 20%)
- LAB
- lab(23.7 54.3 -92.7)
- OKLCH
- oklch(38.9% 0.260 264.3)
Analysis
Color intelligence
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Gamut
The full range of colors a device or space can show. sRGB is the common screen gamut; Display P3 is wider. A color outside a gamut cannot be shown accurately there and must be mapped inward.Full glossary entry →Displays accurately on every screen. Vivid colors like this typically lose some intensity in CMYK print. Request a physical proof for brand-critical work.
Temperature
Undertone
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cool
Nearest standard colors
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →- CSS: mediumblue #0000CD · ΔE 1.1
- RAL 5002: Ultramarine blue #2B2C7C · ΔE 11.9 · approximate
RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck. Pantone's values are proprietary and device-dependent, so we don't print lookups.
Where True Blue works
- Web & UI: Dark enough for body text and icons on white backgrounds. It passes WCAG AA as-is.
- Interiors: Strong for a whole room, excellent in doses: an accent wall, cabinetry, or a statement chair.
- Fashion: Wears best as the statement piece, a top, scarf, or shoes, against neutral basics.
- Branding: Sits in the trust register: a natural primary for finance, health, and B2B brands.
- Web & UI: Best as a button fill, badge, or accent. Pair it with white text only at large sizes, and check contrast.
- Branding: A secondary brand color by nature: it supports a stronger primary and shines in illustration.
Copy as: every ecosystem
Variations
Tints, shades, and tones of True Blue
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →Tints (lighter)
Shades (darker)
Harmonies
Color harmonies
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →Palettes built from True Blue by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Accessibility
Contrast & accessibility
Aa on white
contrast 10.82:1
AA pass AAA pass AA large pass
Aa on black
contrast 1.94:1
AA fail AAA fail AA large fail
Best text color on a True Blue background: #ffffff
Palettes
Palettes featuring True Blue
True Blue with its complement
Soft neighbors of True Blue
True Blue triad
Explore
Similar colors
- Busty Blue #3300CC · ΔE 2.2
- Pure Blue #0203E2 · ΔE 2.6
- Dark Galaxy #0018A8 · ΔE 4.6
- Cobalt #030AA7 · ΔE 4.9
- Bluebonnet #1C1CF0 · ΔE 5.5
- Blue #0000FF · ΔE 6.1
Looking for maximum contrast instead? The complement of True Blue is closest to Pineapple .
FAQ
True Blue FAQs
What color is True Blue?
True Blue is a medium blue with the hex code #010FCC. In HSL terms it has a hue of 236°, 99% saturation, and 40% lightness.
What is the hex code for True Blue?
The hex code for True Blue is #010FCC. In RGB it's rgb(1, 15, 204), and in CMYK it's cmyk(100%, 93%, 0%, 20%).
What colors go well with True Blue?
True Blue pairs naturally with brown tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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