#63C8FC
Closest named color: Lightblue (#7BC8F6). oklch(79.3% 0.12 233.5), rgb(99, 200, 252).
Aa
Black text reads best on this color (11.19:1).
About this color
#63C8FC is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.120 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Lightblue (#7BC8F6), ΔE 0.021 away. Black text reads best on it, at 11.19:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Lightblue (#7BC8F6) |
| Black text | 11.19:1 |
| White text | 1.87:1 |
Values
| HEX | #63C8FC |
| RGB | rgb(99, 200, 252) |
| HSL | hsl(200, 96%, 69%) |
| OKLCH | oklch(79.3% 0.12 233.5) |
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 #63C8FC | 1.87:1 | Fails | Lc -39.5 | Non-text elements, placeholder text |
| Black text on #63C8FC | 11.19:1 | AAA | Lc 68.6 | Content text, not long reading |
| #63C8FC text on white | 1.87:1 | Fails | Lc 35.3 | Non-text elements, placeholder text |
| #63C8FC text on black | 11.19:1 | AAA | Lc -67.3 | 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
#ECF8FF
oklch(97.2% 0.016 233)
-
Step 100
100
#D4EEFE
oklch(93.5% 0.035 234.8)
-
Step 200
200
#AEE1FF
oklch(88.4% 0.067 234.3)
-
Step 300
300 (this color)
#63C8FC
oklch(79.3% 0.12 233.5)
-
Step 400
400
#00AEED
oklch(70.7% 0.147 233.5)
-
Step 500
500
#0095CC
oklch(63.1% 0.132 233.7)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002A3D
oklch(26.9% 0.056 233.8)
#63C8FC 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) | #AFC6FF | 0.078 |
| Deuteranopia (no green cones) | #9AB6FB | 0.067 |
| Tritanopia (no blue cones) | #00D6D9 | 0.082 |
| Achromatopsia (no color) | #BDBDBD | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63C8FC
#63C8FC
oklch(79.3% 0.12 233.5)
- #F7A56F
#F7A56F
oklch(79.1% 0.12 53.5)
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 #63C8FC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lightblue #7BC8F6 ΔE 0.021
- Vivid Sky Blue #4CC9F0 ΔE 0.025
- Sky #82CAFC ΔE 0.028
- Bright Sky Blue #02CCFE ΔE 0.036
- Light Sky Blue #87CEFA ΔE 0.038
- Sky Blue #87CEEB ΔE 0.046
- Deep Sky Blue #00BFFF ΔE 0.050
- Carolina Blue #8AB8FE ΔE 0.053
Use #63C8FC 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.