#63E0FB
Closest named color: Robin's Egg (#6DEDFD). oklch(84.6% 0.116 214.2), rgb(99, 224, 251).
Aa
Black text reads best on this color (13.58:1).
About this color
#63E0FB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.116 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.037 away. Black text reads best on it, at 13.58:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.58:1 |
| White text | 1.54:1 |
Values
| HEX | #63E0FB |
| RGB | rgb(99, 224, 251) |
| HSL | hsl(191, 95%, 69%) |
| OKLCH | oklch(84.6% 0.116 214.2) |
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 #63E0FB | 1.54:1 | Fails | Lc -28.2 | Dividers and decoration only |
| Black text on #63E0FB | 13.58:1 | AAA | Lc 78.9 | Fine for body text |
| #63E0FB text on white | 1.54:1 | Fails | Lc 24.9 | Dividers and decoration only |
| #63E0FB text on black | 13.58:1 | AAA | Lc -78.3 | 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
#EAF8FC
oklch(97% 0.016 216.7)
-
Step 100
100
#D2F0F8
oklch(93.6% 0.033 215.6)
-
Step 200
200
#A8E5F3
oklch(88.5% 0.064 213.4)
-
Step 300
300 (this color)
#63E0FB
oklch(84.6% 0.116 214.2)
-
Step 400
400
#00B4D0
oklch(70.8% 0.124 214)
-
Step 500
500
#009AB2
oklch(63.1% 0.111 213.9)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
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
#002C35
oklch(27% 0.048 215.4)
#63E0FB 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) | #CCD9FD | 0.105 |
| Deuteranopia (no green cones) | #B6C9FB | 0.095 |
| Tritanopia (no blue cones) | #00EAE8 | 0.055 |
| Achromatopsia (no color) | #D0D0D0 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63E0FB
#63E0FB
oklch(84.6% 0.116 214.2)
- #FFB9A8
#FFB9A8
oklch(84.6% 0.085 34.1)
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 #63E0FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.037
- Sky Blue #87CEEB ΔE 0.050
- Aqua Blue #02D8E9 ΔE 0.051
- Light Sky Blue #87CEFA ΔE 0.053
- Robin Egg Blue #8AF1FE ΔE 0.059
- Sky #82CAFC ΔE 0.062
- Bright Light Blue #26F7FD ΔE 0.063
- Lightblue #7BC8F6 ΔE 0.064
Use #63E0FB 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.