#63C4FA
Closest named color: Lightblue (#7BC8F6). oklch(78.3% 0.119 235.5), rgb(99, 196, 250).
Aa
Black text reads best on this color (10.80:1).
About this color
#63C4FA is a light, moderately saturated blue. In OKLCH its lightness is 78%, its chroma 0.119 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Lightblue (#7BC8F6), ΔE 0.026 away. Black text reads best on it, at 10.80:1.
| Hue family | Blues |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Lightblue (#7BC8F6) |
| Black text | 10.80:1 |
| White text | 1.94:1 |
Values
| HEX | #63C4FA |
| RGB | rgb(99, 196, 250) |
| HSL | hsl(201, 94%, 68%) |
| OKLCH | oklch(78.3% 0.119 235.5) |
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 #63C4FA | 1.94:1 | Fails | Lc -41.4 | Non-text elements, placeholder text |
| Black text on #63C4FA | 10.80:1 | AAA | Lc 66.8 | Content text, not long reading |
| #63C4FA text on white | 1.94:1 | Fails | Lc 37.1 | Non-text elements, placeholder text |
| #63C4FA text on black | 10.80:1 | AAA | Lc -65.4 | 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
#ECF7FF
oklch(97% 0.016 239.1)
-
Step 100
100
#D5EEFE
oklch(93.6% 0.034 235.9)
-
Step 200
200
#B0E1FF
oklch(88.6% 0.065 235.4)
-
Step 300
300 (this color)
#63C4FA
oklch(78.3% 0.119 235.5)
-
Step 400
400
#00ADF1
oklch(70.7% 0.151 235.7)
-
Step 500
500
#0094CF
oklch(63% 0.135 235.8)
-
Step 600
600
#007DAF
oklch(55.7% 0.119 235.4)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#63C4FA 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) | #AAC3FD | 0.073 |
| Deuteranopia (no green cones) | #96B3F9 | 0.063 |
| Tritanopia (no blue cones) | #00D2D6 | 0.084 |
| Achromatopsia (no color) | #BABABA | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63C4FA
#63C4FA
oklch(78.3% 0.119 235.5)
- #F3A36A
#F3A36A
oklch(78.2% 0.12 55.4)
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 #63C4FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lightblue #7BC8F6 ΔE 0.026
- Vivid Sky Blue #4CC9F0 ΔE 0.027
- Sky #82CAFC ΔE 0.034
- Bright Sky Blue #02CCFE ΔE 0.039
- Deep Sky Blue #00BFFF ΔE 0.045
- Light Sky Blue #87CEFA ΔE 0.045
- Carolina Blue #8AB8FE ΔE 0.047
- Sky Blue #87CEEB ΔE 0.052
Use #63C4FA 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.