#63E0FF
Closest named color: Robin's Egg (#6DEDFD). oklch(84.8% 0.118 216.8), rgb(99, 224, 255).
Aa
Black text reads best on this color (13.63:1).
About this color
#63E0FF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.118 and its hue 217°. 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 13.63:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.63:1 |
| White text | 1.53:1 |
Values
| HEX | #63E0FF |
| RGB | rgb(99, 224, 255) |
| HSL | hsl(192, 100%, 69%) |
| OKLCH | oklch(84.8% 0.118 216.8) |
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 #63E0FF | 1.53:1 | Fails | Lc -27.9 | Dividers and decoration only |
| Black text on #63E0FF | 13.63:1 | AAA | Lc 79.1 | Fine for body text |
| #63E0FF text on white | 1.53:1 | Fails | Lc 24.6 | Dividers and decoration only |
| #63E0FF text on black | 13.63:1 | AAA | Lc -78.5 | 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 200.
-
Step 50
50
#E7F9FE
oklch(97% 0.02 216.2)
-
Step 100
100
#CAF2FD
oklch(93.6% 0.044 216.2)
-
Step 200
200 (this color)
#63E0FF
oklch(84.8% 0.118 216.8)
-
Step 300
300
#00D6FD
oklch(80.8% 0.145 217.3)
-
Step 400
400
#00B3D3
oklch(70.7% 0.126 216.7)
-
Step 500
500
#0099B5
oklch(63% 0.112 216.9)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A59
oklch(37.7% 0.067 217.2)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#63E0FF 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) | #CBDAFF | 0.103 |
| Deuteranopia (no green cones) | #B5C9FF | 0.094 |
| Tritanopia (no blue cones) | #00EBEA | 0.058 |
| Achromatopsia (no color) | #D0D0D0 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63E0FF
#63E0FF
oklch(84.8% 0.118 216.8)
- #FFBAA6
#FFBAA6
oklch(84.8% 0.085 36.8)
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 #63E0FF, 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
- Sky Blue #87CEEB ΔE 0.051
- Light Sky Blue #87CEFA ΔE 0.051
- Aqua Blue #02D8E9 ΔE 0.054
- Robin Egg Blue #8AF1FE ΔE 0.060
- Sky #82CAFC ΔE 0.060
- Lightblue #7BC8F6 ΔE 0.063
- Bright Light Blue #26F7FD ΔE 0.065
Use #63E0FF 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.