#63E0EE
Closest named color: Robin's Egg (#6DEDFD). oklch(84.2% 0.112 205.3), rgb(99, 224, 238).
Aa
Black text reads best on this color (13.42:1).
About this color
#63E0EE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 84%, its chroma 0.112 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.038 away. Black text reads best on it, at 13.42:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.42:1 |
| White text | 1.56:1 |
Values
| HEX | #63E0EE |
| RGB | rgb(99, 224, 238) |
| HSL | hsl(186, 80%, 66%) |
| OKLCH | oklch(84.2% 0.112 205.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #63E0EE | 1.56:1 | Fails | Lc -28.9 | Dividers and decoration only |
| Black text on #63E0EE | 13.42:1 | AAA | Lc 78.2 | Fine for body text |
| #63E0EE text on white | 1.56:1 | Fails | Lc 25.5 | Dividers and decoration only |
| #63E0EE text on black | 13.42:1 | AAA | Lc -77.5 | Fine for body text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 300.
-
Step 50
50
#EBF9FA
oklch(97.2% 0.015 202.1)
-
Step 100
100
#D2F1F4
oklch(93.7% 0.033 203.7)
-
Step 200
200
#A9E6ED
oklch(88.6% 0.062 205)
-
Step 300
300 (this color)
#63E0EE
oklch(84.2% 0.112 205.3)
-
Step 400
400
#00B5C5
oklch(70.6% 0.121 206)
-
Step 500
500
#009CA9
oklch(63.2% 0.108 205.2)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#63E0EE with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #D0D8EF | 0.111 |
| Deuteranopia (no green cones) | #BAC8EE | 0.101 |
| Tritanopia (no blue cones) | #00E8E4 | 0.043 |
| Achromatopsia (no color) | #CFCFCF | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63E0EE
#63E0EE
oklch(84.2% 0.112 205.3)
- #FFB5AE
#FFB5AE
oklch(84.1% 0.087 25.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #63E0EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.038
- Aqua Blue #02D8E9 ΔE 0.045
- Turquoise #40E0D0 ΔE 0.050
- Sky Blue #87CEEB ΔE 0.053
- Bright Light Blue #26F7FD ΔE 0.060
- Robin Egg Blue #8AF1FE ΔE 0.060
- Medium Turquoise #48D1CC ΔE 0.061
- Light Sky Blue #87CEFA ΔE 0.062
Use #63E0EE in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.