#63D7FB
Closest named color: Light Sky Blue (#87CEFA). oklch(82.6% 0.116 221.3), rgb(99, 215, 251).
Aa
Black text reads best on this color (12.64:1).
About this color
#63D7FB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 83%, its chroma 0.116 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sky Blue (#87CEFA), ΔE 0.036 away. Black text reads best on it, at 12.64:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Light Sky Blue (#87CEFA) |
| Black text | 12.64:1 |
| White text | 1.66:1 |
Values
| HEX | #63D7FB |
| RGB | rgb(99, 215, 251) |
| HSL | hsl(194, 95%, 69%) |
| OKLCH | oklch(82.6% 0.116 221.3) |
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 #63D7FB | 1.66:1 | Fails | Lc -32.5 | Non-text elements, placeholder text |
| Black text on #63D7FB | 12.64:1 | AAA | Lc 75.0 | Content text, not long reading |
| #63D7FB text on white | 1.66:1 | Fails | Lc 28.9 | Dividers and decoration only |
| #63D7FB text on black | 12.64:1 | AAA | Lc -74.0 | Content text, not long reading |
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
#EBF8FD
oklch(97.1% 0.015 222.7)
-
Step 100
100
#D3F0FA
oklch(93.7% 0.033 220.5)
-
Step 200
200
#AAE4F7
oklch(88.6% 0.064 220.1)
-
Step 300
300 (this color)
#63D7FB
oklch(82.6% 0.116 221.3)
-
Step 400
400
#00B2D9
oklch(70.7% 0.13 221)
-
Step 500
500
#0098BB
oklch(63% 0.116 221.8)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#63D7FB 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) | #C2D2FD | 0.096 |
| Deuteranopia (no green cones) | #ACC2FB | 0.085 |
| Tritanopia (no blue cones) | #00E3E2 | 0.065 |
| Achromatopsia (no color) | #C9C9C9 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D7FB
#63D7FB
oklch(82.6% 0.116 221.3)
- #FFB092
#FFB092
oklch(82.6% 0.102 41.6)
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 #63D7FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sky Blue #87CEFA ΔE 0.036
- Sky Blue #87CEEB ΔE 0.036
- Lightblue #7BC8F6 ΔE 0.041
- Sky #82CAFC ΔE 0.041
- Vivid Sky Blue #4CC9F0 ΔE 0.044
- Aqua Blue #02D8E9 ΔE 0.047
- Bright Sky Blue #02CCFE ΔE 0.052
- Baby Blue #A2CFFE ΔE 0.060
Use #63D7FB 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.