#63CDFA
Closest named color: Lightblue (#7BC8F6). oklch(80.3% 0.116 228.6), rgb(99, 205, 250).
Aa
Black text reads best on this color (11.64:1).
About this color
#63CDFA is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.116 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Lightblue (#7BC8F6), ΔE 0.022 away. Black text reads best on it, at 11.64:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Lightblue (#7BC8F6) |
| Black text | 11.64:1 |
| White text | 1.80:1 |
Values
| HEX | #63CDFA |
| RGB | rgb(99, 205, 250) |
| HSL | hsl(198, 94%, 68%) |
| OKLCH | oklch(80.3% 0.116 228.6) |
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 #63CDFA | 1.80:1 | Fails | Lc -37.3 | Non-text elements, placeholder text |
| Black text on #63CDFA | 11.64:1 | AAA | Lc 70.6 | Content text, not long reading |
| #63CDFA text on white | 1.80:1 | Fails | Lc 33.3 | Non-text elements, placeholder text |
| #63CDFA text on black | 11.64:1 | AAA | Lc -69.4 | 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
#EBF8FE
oklch(97.1% 0.016 227)
-
Step 100
100
#D4EFFC
oklch(93.6% 0.033 228.3)
-
Step 200
200
#ADE2FB
oklch(88.4% 0.064 228.5)
-
Step 300
300 (this color)
#63CDFA
oklch(80.3% 0.116 228.6)
-
Step 400
400
#00B0E5
oklch(70.8% 0.139 228.7)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA6
oklch(55.7% 0.109 228.5)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#63CDFA 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) | #B6CAFC | 0.084 |
| Deuteranopia (no green cones) | #A0BAF9 | 0.073 |
| Tritanopia (no blue cones) | #00DADC | 0.074 |
| Achromatopsia (no color) | #C1C1C1 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CDFA
#63CDFA
oklch(80.3% 0.116 228.6)
- #FCA77B
#FCA77B
oklch(80.2% 0.117 47.9)
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 #63CDFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lightblue #7BC8F6 ΔE 0.022
- Vivid Sky Blue #4CC9F0 ΔE 0.025
- Sky #82CAFC ΔE 0.027
- Light Sky Blue #87CEFA ΔE 0.032
- Sky Blue #87CEEB ΔE 0.037
- Bright Sky Blue #02CCFE ΔE 0.037
- Aqua Blue #02D8E9 ΔE 0.056
- Deep Sky Blue #00BFFF ΔE 0.061
Use #63CDFA 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.