#63BAEC
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.4% 0.111 236), rgb(99, 186, 236).
Aa
Black text reads best on this color (9.76:1).
About this color
#63BAEC is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.111 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.041 away. Black text reads best on it, at 9.76:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.76:1 |
| White text | 2.15:1 |
Values
| HEX | #63BAEC |
| RGB | rgb(99, 186, 236) |
| HSL | hsl(202, 78%, 66%) |
| OKLCH | oklch(75.4% 0.111 236) |
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 #63BAEC | 2.15:1 | Fails | Lc -46.7 | Large or bold text, headings |
| Black text on #63BAEC | 9.76:1 | AAA | Lc 61.9 | Content text, not long reading |
| #63BAEC text on white | 2.15:1 | Fails | Lc 42.0 | Non-text elements, placeholder text |
| #63BAEC text on black | 9.76:1 | AAA | Lc -60.2 | 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 400.
-
Step 50
50
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DEF0
oklch(88.6% 0.039 236.1)
-
Step 300
300
#96C8E8
oklch(80.9% 0.069 236.8)
-
Step 400
400 (this color)
#63BAEC
oklch(75.4% 0.111 236)
-
Step 500
500
#0094D0
oklch(63.1% 0.136 236.2)
-
Step 600
600
#007CAF
oklch(55.5% 0.12 236.1)
-
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
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#63BAEC 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) | #A3B9EE | 0.068 |
| Deuteranopia (no green cones) | #90ABEB | 0.057 |
| Tritanopia (no blue cones) | #00C7CB | 0.081 |
| Achromatopsia (no color) | #B1B1B1 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BAEC
#63BAEC
oklch(75.4% 0.111 236)
- #E59C68
#E59C68
oklch(75.4% 0.111 55.6)
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 #63BAEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.041
- Deep Sky Blue #00BFFF ΔE 0.044
- Lightblue #7BC8F6 ΔE 0.047
- Carolina Blue #8AB8FE ΔE 0.049
- Bright Sky Blue #02CCFE ΔE 0.055
- Sky #82CAFC ΔE 0.057
- Light Cornflower Blue #98C1D9 ΔE 0.066
- Light Grey Blue #9DBCD4 ΔE 0.068
Use #63BAEC 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.