High Blue
Also known as: Blue Astro, Waimea Blue, Thalassophile, Cousteau
Part of the blue family, High Blue pairs a medium base with a calm and trustworthy presence — ideal for finance apps and trust-driven interfaces. Reach for a orange companion shade to give High Blue maximum contrast. Accessibility-wise, it needs a dark backdrop — 7.98:1 on black clears AA.
High Blue color codes
- HEX
- #4CA8E0
- RGB
- rgb(76, 168, 224)
- RGBA
- rgba(76, 168, 224, 1)
- HSL
- hsl(203, 70%, 59%)
- HSV
- hsv(203, 66%, 88%)
- CMYK
- cmyk(66%, 25%, 0%, 12%)
- LAB
- lab(65.1 -15.1 -37.1)
- OKLCH
- oklch(70.0% 0.120 238.6)
Color intelligence
Displays accurately on every screen and translates well to print.
Temperature
cool
Nearest standard colors
- CSS: deepskyblue#00BFFF · ΔE 7.2
- RAL 5024 — Pastel blue#6A93B0 · ΔE 9.0 · 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 High Blue works
- Web & UI: Best as a button fill, badge, or accent — pair it with white text only at large sizes, and check contrast.
- 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: A supporting-cast color for UI: chart fills, tags, empty-state illustrations — not text.
- Branding: A secondary brand color by nature: it supports a stronger primary and shines in illustration.
Copy as — every ecosystem
Tints, shades, and tones of High Blue
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from High Blue by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Contrast & accessibility
Aa — on white
contrast 2.63:1
AA failAAA failAA large fail
Aa — on black
contrast 7.98:1
AA passAAA passAA large pass
Best text color on a High Blue background: #000000
Palettes featuring High Blue
High Blue with its complement
Soft neighbors of High Blue
High Blue triad
Similar colors
- Thalassophile#44AADD · ΔE 2.1
- Cousteau#55A9D6 · ΔE 2.4
- Sub-Zero#57A1CE · ΔE 2.9
- Cerulean#55AAEE · ΔE 3.1
- Windjammer#62A5DF · ΔE 3.6
- Blue Burst#309CD0 · ΔE 4.5
Looking for maximum contrast instead? The complement of High Blue is closest to Cognac.
High Blue FAQs
What color is High Blue?
High Blue is a medium blue with the hex code #4CA8E0. In HSL terms it has a hue of 203°, 70% saturation, and 59% lightness.
What is the hex code for High Blue?
The hex code for High Blue is #4CA8E0. In RGB it's rgb(76, 168, 224), and in CMYK it's cmyk(66%, 25%, 0%, 12%).
What colors go well with High Blue?
High Blue pairs naturally with orange tones from its complementary harmony, and with red accents from its split-complementary palette. Its own tints and shades always work as a monochrome scheme.
Got a photo with a color like this? Identify it with the analyzer — free, instant, private.