#63E1FE
Closest named color: Robin's Egg (#6DEDFD). oklch(85% 0.118 215.4), rgb(99, 225, 254).
Aa
Black text reads best on this color (13.73:1).
About this color
#63E1FE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.118 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.035 away. Black text reads best on it, at 13.73:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.73:1 |
| White text | 1.52:1 |
Values
| HEX | #63E1FE |
| RGB | rgb(99, 225, 254) |
| HSL | hsl(191, 99%, 69%) |
| OKLCH | oklch(85% 0.118 215.4) |
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 #63E1FE | 1.52:1 | Fails | Lc -27.5 | Dividers and decoration only |
| Black text on #63E1FE | 13.73:1 | AAA | Lc 79.5 | Fine for body text |
| #63E1FE text on white | 1.52:1 | Fails | Lc 24.2 | Dividers and decoration only |
| #63E1FE text on black | 13.73:1 | AAA | Lc -78.9 | 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
#CAF2FC
oklch(93.6% 0.043 214.6)
-
Step 200
200 (this color)
#63E1FE
oklch(85% 0.118 215.4)
-
Step 300
300
#00D7FA
oklch(80.9% 0.143 215.1)
-
Step 400
400
#00B3D1
oklch(70.6% 0.125 215.4)
-
Step 500
500
#009AB4
oklch(63.2% 0.112 215.3)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D80
oklch(49.2% 0.087 215.3)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#63E1FE 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) | #CDDAFF | 0.105 |
| Deuteranopia (no green cones) | #B6CAFE | 0.094 |
| Tritanopia (no blue cones) | #00ECEA | 0.057 |
| Achromatopsia (no color) | #D1D1D1 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63E1FE
#63E1FE
oklch(85% 0.118 215.4)
- #FFBBA9
#FFBBA9
oklch(85% 0.083 35.4)
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 #63E1FE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.035
- Sky Blue #87CEEB ΔE 0.053
- Light Sky Blue #87CEFA ΔE 0.054
- Aqua Blue #02D8E9 ΔE 0.054
- Robin Egg Blue #8AF1FE ΔE 0.057
- Bright Light Blue #26F7FD ΔE 0.062
- Robin's Egg Blue #98EFF9 ΔE 0.063
- Sky #82CAFC ΔE 0.063
Use #63E1FE 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.