#63E1FB
Closest named color: Robin's Egg (#6DEDFD). oklch(84.9% 0.116 213.5), rgb(99, 225, 251).
Aa
Black text reads best on this color (13.69:1).
About this color
#63E1FB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.116 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.034 away. Black text reads best on it, at 13.69:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.69:1 |
| White text | 1.53:1 |
Values
| HEX | #63E1FB |
| RGB | rgb(99, 225, 251) |
| HSL | hsl(190, 95%, 69%) |
| OKLCH | oklch(84.9% 0.116 213.5) |
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 #63E1FB | 1.53:1 | Fails | Lc -27.7 | Dividers and decoration only |
| Black text on #63E1FB | 13.69:1 | AAA | Lc 79.3 | Fine for body text |
| #63E1FB text on white | 1.53:1 | Fails | Lc 24.4 | Dividers and decoration only |
| #63E1FB text on black | 13.69:1 | AAA | Lc -78.7 | 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 200.
-
Step 50
50
#E7F9FE
oklch(97% 0.02 216.2)
-
Step 100
100
#CAF2FB
oklch(93.6% 0.043 212.9)
-
Step 200
200 (this color)
#63E1FB
oklch(84.9% 0.116 213.5)
-
Step 300
300
#00D7F7
oklch(80.8% 0.142 213.5)
-
Step 400
400
#00B4CF
oklch(70.8% 0.124 213.4)
-
Step 500
500
#009AB2
oklch(63.1% 0.111 213.9)
-
Step 600
600
#008296
oklch(55.7% 0.098 213.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#63E1FB 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) | #CEDAFD | 0.107 |
| Deuteranopia (no green cones) | #B7C9FB | 0.097 |
| Tritanopia (no blue cones) | #00EBE9 | 0.053 |
| Achromatopsia (no color) | #D1D1D1 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63E1FB
#63E1FB
oklch(84.9% 0.116 213.5)
- #FFBAAA
#FFBAAA
oklch(84.9% 0.084 33.5)
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 #63E1FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.034
- Aqua Blue #02D8E9 ΔE 0.052
- Sky Blue #87CEEB ΔE 0.053
- Light Sky Blue #87CEFA ΔE 0.055
- Robin Egg Blue #8AF1FE ΔE 0.057
- Bright Light Blue #26F7FD ΔE 0.061
- Robin's Egg Blue #98EFF9 ΔE 0.062
- Sky #82CAFC ΔE 0.065
Use #63E1FB 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.