Hydra
Also known as: Sea Blue , Peacock Blue , Port au Prince , Europe Blue
A vivid cyan with a clean and modern character, Hydra works well for tech interfaces and water themes. Its complement lands in brown territory, which makes for striking two-color pairings. On white it reads clearly at 6.08:1 contrast, safe for body text under WCAG AA.
Reference
Hydra color codes
- HEX
- #006995
- RGB
- rgb(0, 105, 149)
- RGBA
- rgba(0, 105, 149, 1)
- HSL
- hsl(198, 100%, 29%)
- HSV
- hsv(198, 100%, 58%)
- CMYK
- cmyk(100%, 30%, 0%, 42%)
- LAB
- lab(41.1 -13.4 -31.8)
- OKLCH
- oklch(49.3% 0.106 236.2)
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 and translates well to print.
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: steelblue #4682B4 · ΔE 11.0
- RAL 5007: Brilliant blue #41678D · ΔE 6.5 · 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 Hydra works
- Web & UI: Use it directly for text on light surfaces; it clears AA contrast without adjustment.
- Interiors: Use it where you want the eye to land: a front door, built-ins, or one bold wall.
- Fashion: One garment in this color carries an outfit; two starts to compete.
- Branding: The safest brand-primary family there is; differentiate with an unexpected accent.
- Web & UI: Use it decoratively for dividers, chart series, and illustration accents, and let neutrals carry the type.
- Branding: Best in a brand's supporting palette: packaging interiors, patterns, campaign accents.
Copy as: every ecosystem
Variations
Tints, shades, and tones of Hydra
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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 Hydra 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 6.08:1
AA pass AAA fail AA large pass
Aa on black
contrast 3.45:1
AA fail AAA fail AA large pass
Best text color on a Hydra background: #ffffff
Palettes
Palettes featuring Hydra
Hydra with its complement
Soft neighbors of Hydra
Hydra triad
Explore
Similar colors
- Wavy Navy #006597 · ΔE 2.4
- Blue Velvet #0D6183 · ΔE 3.8
- Copacabana #006C8D · ΔE 4.1
- Harem Silk #006383 · ΔE 4.3
- Windsurfing #3A7099 · ΔE 4.8
- Hyper Blue #015F97 · ΔE 5.0
Looking for maximum contrast instead? The complement of Hydra is closest to Warm Brown .
FAQ
Hydra FAQs
What color is Hydra?
Hydra is a dark cyan with the hex code #006995. In HSL terms it has a hue of 198°, 100% saturation, and 29% lightness.
What is the hex code for Hydra?
The hex code for Hydra is #006995. In RGB it's rgb(0, 105, 149), and in CMYK it's cmyk(100%, 30%, 0%, 42%).
What colors go well with Hydra?
Hydra pairs naturally with brown 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.
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