#63ADCB
Closest named color: Greyblue (#77A1B5). oklch(71.1% 0.086 226.3), rgb(99, 173, 203).
Aa
Black text reads best on this color (8.37:1).
About this color
#63ADCB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.086 and its hue 226°. 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 8.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.37:1 |
| White text | 2.50:1 |
Values
| HEX | #63ADCB |
| RGB | rgb(99, 173, 203) |
| HSL | hsl(197, 50%, 59%) |
| OKLCH | oklch(71.1% 0.086 226.3) |
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 #63ADCB | 2.50:1 | Fails | Lc -54.2 | Large or bold text, headings |
| Black text on #63ADCB | 8.37:1 | AAA | Lc 54.9 | Large or bold text, headings |
| #63ADCB text on white | 2.50:1 | Fails | Lc 49.1 | Large or bold text, headings |
| #63ADCB text on black | 8.37:1 | AAA | Lc -52.9 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C5DEE8
oklch(88.5% 0.03 223.8)
-
Step 300
300
#9CC8DB
oklch(80.8% 0.054 226.2)
-
Step 400
400 (this color)
#63ADCB
oklch(71.1% 0.086 226.3)
-
Step 500
500
#2896BC
oklch(63% 0.11 226.5)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#02495F
oklch(37.8% 0.072 226.5)
-
Step 950
950
#072B37
oklch(27% 0.045 224.7)
#63ADCB 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) | #9DAACD | 0.066 |
| Deuteranopia (no green cones) | #8E9ECB | 0.059 |
| Tritanopia (no blue cones) | #24B6B7 | 0.060 |
| Achromatopsia (no color) | #A3A3A3 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63ADCB
#63ADCB
oklch(71.1% 0.086 226.3)
- #CF9174
#CF9174
oklch(71.1% 0.086 46)
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 #63ADCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.041
- Bluegrey #85A3B2 ΔE 0.048
- Turquoise Blue #06B1C4 ΔE 0.048
- Bluey Grey #89A0B0 ΔE 0.055
- Cool Steel #97A7B3 ΔE 0.062
- Cadet Blue #5F9EA0 ΔE 0.068
- Cool Gray #8D99AE ΔE 0.068
- Cool Grey #95A3A6 ΔE 0.070
Use #63ADCB 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.