#63A2DF
Closest named color: Cornflower Blue (#6495ED). oklch(69.5% 0.111 249), rgb(99, 162, 223).
Aa
Black text reads best on this color (7.76:1).
About this color
#63A2DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.111 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.045 away. Black text reads best on it, at 7.76:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.76:1 |
| White text | 2.70:1 |
Values
| HEX | #63A2DF |
| RGB | rgb(99, 162, 223) |
| HSL | hsl(210, 66%, 63%) |
| OKLCH | oklch(69.5% 0.111 249) |
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 #63A2DF | 2.70:1 | Fails | Lc -57.5 | Large or bold text, headings |
| Black text on #63A2DF | 7.76:1 | AAA | Lc 51.7 | Large or bold text, headings |
| #63A2DF text on white | 2.70:1 | Fails | Lc 52.3 | Large or bold text, headings |
| #63A2DF text on black | 7.76:1 | AAA | Lc -49.6 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF2
oklch(88.5% 0.038 248.3)
-
Step 300
300
#9EC5EC
oklch(80.9% 0.069 248.7)
-
Step 400
400 (this color)
#63A2DF
oklch(69.5% 0.111 249)
-
Step 500
500
#378EDB
oklch(63.1% 0.142 248.9)
-
Step 600
600
#0076C8
oklch(55.5% 0.154 249.2)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518C
oklch(42.7% 0.118 249.2)
-
Step 900
900
#0F4470
oklch(37.8% 0.092 248.7)
-
Step 950
950
#0B2842
oklch(27% 0.059 248.9)
#63A2DF 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) | #88A4E2 | 0.043 |
| Deuteranopia (no green cones) | #7898DE | 0.032 |
| Tritanopia (no blue cones) | #00B0B7 | 0.095 |
| Achromatopsia (no color) | #9D9D9D | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A2DF
#63A2DF
oklch(69.5% 0.111 249)
- #CA8F4A
#CA8F4A
oklch(69.5% 0.112 68.4)
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 #63A2DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.045
- Chefchaouen Blue #4895EF ΔE 0.055
- Greyblue #77A1B5 ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.067
- Faded Blue #658CBB ΔE 0.071
- Periwinkle Blue #8F99FB ΔE 0.073
- Bluegrey #85A3B2 ΔE 0.075
- Soft Blue #6488EA ΔE 0.076
Use #63A2DF 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.