#63B2FC
Closest named color: Carolina Blue (#8AB8FE). oklch(74.4% 0.133 248.6), rgb(99, 178, 252).
Aa
Black text reads best on this color (9.30:1).
About this color
#63B2FC is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.133 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.044 away. Black text reads best on it, at 9.30:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.30:1 |
| White text | 2.25:1 |
Values
| HEX | #63B2FC |
| RGB | rgb(99, 178, 252) |
| HSL | hsl(209, 96%, 69%) |
| OKLCH | oklch(74.4% 0.133 248.6) |
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 #63B2FC | 2.25:1 | Fails | Lc -49.1 | Large or bold text, headings |
| Black text on #63B2FC | 9.30:1 | AAA | Lc 59.7 | Large or bold text, headings |
| #63B2FC text on white | 2.25:1 | Fails | Lc 44.3 | Non-text elements, placeholder text |
| #63B2FC text on black | 9.30:1 | AAA | Lc -57.9 | 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
#DEECFA
oklch(93.7% 0.024 248.1)
-
Step 200
200
#C2DCF7
oklch(88.4% 0.047 249.4)
-
Step 300
300
#96C6F4
oklch(80.9% 0.083 247.8)
-
Step 400
400 (this color)
#63B2FC
oklch(74.4% 0.133 248.6)
-
Step 500
500
#0A8DEA
oklch(63% 0.17 248.8)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
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
#032847
oklch(27.1% 0.07 248.8)
#63B2FC 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) | #92B5FF | 0.051 |
| Deuteranopia (no green cones) | #7EA6FB | 0.038 |
| Tritanopia (no blue cones) | #00C3CC | 0.106 |
| Achromatopsia (no color) | #ADADAD | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B2FC
#63B2FC
oklch(74.4% 0.133 248.6)
- #E29B43
#E29B43
oklch(74.4% 0.133 68.7)
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 #63B2FC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.044
- Deep Sky Blue #00BFFF ΔE 0.048
- Lightblue #7BC8F6 ΔE 0.069
- Vivid Sky Blue #4CC9F0 ΔE 0.070
- Bright Sky Blue #02CCFE ΔE 0.074
- Periwinkle Blue #8F99FB ΔE 0.075
- Sky #82CAFC ΔE 0.075
- Cornflower Blue #6495ED ΔE 0.076
Use #63B2FC 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.