#63AFF7
Closest named color: Carolina Blue (#8AB8FE). oklch(73.5% 0.13 248.8), rgb(99, 175, 247).
Aa
Black text reads best on this color (9.00:1).
About this color
#63AFF7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.130 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.050 away. Black text reads best on it, at 9.00:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.00:1 |
| White text | 2.33:1 |
Values
| HEX | #63AFF7 |
| RGB | rgb(99, 175, 247) |
| HSL | hsl(209, 90%, 68%) |
| OKLCH | oklch(73.5% 0.13 248.8) |
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 #63AFF7 | 2.33:1 | Fails | Lc -50.7 | Large or bold text, headings |
| Black text on #63AFF7 | 9.00:1 | AAA | Lc 58.2 | Large or bold text, headings |
| #63AFF7 text on white | 2.33:1 | Fails | Lc 45.8 | Large or bold text, headings |
| #63AFF7 text on black | 9.00:1 | AAA | Lc -56.3 | Large or bold text, headings |
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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C3DCF6
oklch(88.4% 0.045 249.4)
-
Step 300
300
#98C6F3
oklch(81% 0.08 248.3)
-
Step 400
400 (this color)
#63AFF7
oklch(73.5% 0.13 248.8)
-
Step 500
500
#188DE8
oklch(63% 0.166 249.1)
-
Step 600
600
#0076C7
oklch(55.5% 0.153 248.9)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#004475
oklch(37.8% 0.103 248.3)
-
Step 950
950
#042846
oklch(27% 0.068 248.6)
#63AFF7 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) | #90B2FA | 0.049 |
| Deuteranopia (no green cones) | #7CA3F6 | 0.037 |
| Tritanopia (no blue cones) | #00C0C8 | 0.105 |
| Achromatopsia (no color) | #AAAAAA | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AFF7
#63AFF7
oklch(73.5% 0.13 248.8)
- #DE9944
#DE9944
oklch(73.6% 0.129 68.8)
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 #63AFF7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.050
- Deep Sky Blue #00BFFF ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.068
- Periwinkle Blue #8F99FB ΔE 0.072
- Vivid Sky Blue #4CC9F0 ΔE 0.075
- Lightblue #7BC8F6 ΔE 0.076
- Chefchaouen Blue #4895EF ΔE 0.077
- Bright Sky Blue #02CCFE ΔE 0.080
Use #63AFF7 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.