#63A0CD
Closest named color: Greyblue (#77A1B5). oklch(68.2% 0.092 241.8), rgb(99, 160, 205).
Aa
Black text reads best on this color (7.44:1).
About this color
#63A0CD is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.092 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.041 away. Black text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.44:1 |
| White text | 2.82:1 |
Values
| HEX | #63A0CD |
| RGB | rgb(99, 160, 205) |
| HSL | hsl(205, 51%, 60%) |
| OKLCH | oklch(68.2% 0.092 241.8) |
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 #63A0CD | 2.82:1 | Fails | Lc -59.4 | Large or bold text, headings |
| Black text on #63A0CD | 7.44:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #63A0CD text on white | 2.82:1 | Fails | Lc 54.1 | Large or bold text, headings |
| #63A0CD text on black | 7.44:1 | AAA | Lc -47.7 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C7DCED
oklch(88.4% 0.033 242.4)
-
Step 300
300
#A0C6E3
oklch(80.9% 0.058 241.3)
-
Step 400
400 (this color)
#63A0CD
oklch(68.2% 0.092 241.8)
-
Step 500
500
#3D91CA
oklch(63.1% 0.118 241.8)
-
Step 600
600
#0D7AB7
oklch(55.5% 0.128 242)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#065480
oklch(42.7% 0.099 242.1)
-
Step 900
900
#134666
oklch(37.7% 0.076 241)
-
Step 950
950
#0D293C
oklch(27% 0.049 241.5)
#63A0CD 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) | #8CA0CF | 0.047 |
| Deuteranopia (no green cones) | #7E95CC | 0.040 |
| Tritanopia (no blue cones) | #27ABAF | 0.076 |
| Achromatopsia (no color) | #9A9A9A | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A0CD
#63A0CD
oklch(68.2% 0.092 241.8)
- #C28C5C
#C28C5C
oklch(68.2% 0.092 62)
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 #63A0CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.041
- Faded Blue #658CBB ΔE 0.056
- Bluegrey #85A3B2 ΔE 0.056
- Bluey Grey #89A0B0 ΔE 0.058
- Cool Gray #8D99AE ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.063
- Silver Lake Blue #778DA9 ΔE 0.065
- Turquoise Blue #06B1C4 ΔE 0.067
Use #63A0CD 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.