#63D1AB
Closest named color: Medium Aquamarine (#66CDAA). oklch(78.5% 0.116 168.1), rgb(99, 209, 171).
Aa
Black text reads best on this color (11.23:1).
About this color
#63D1AB is a light, moderately saturated green. In OKLCH its lightness is 79%, its chroma 0.116 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.011 away. Black text reads best on it, at 11.23:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 11.23:1 |
| White text | 1.86:1 |
Values
| HEX | #63D1AB |
| RGB | rgb(99, 209, 171) |
| HSL | hsl(159, 54%, 60%) |
| OKLCH | oklch(78.5% 0.116 168.1) |
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 #63D1AB | 1.86:1 | Fails | Lc -39.3 | Non-text elements, placeholder text |
| Black text on #63D1AB | 11.23:1 | AAA | Lc 68.8 | Content text, not long reading |
| #63D1AB text on white | 1.86:1 | Fails | Lc 35.1 | Non-text elements, placeholder text |
| #63D1AB text on black | 11.23:1 | AAA | Lc -67.4 | Content text, not long reading |
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 300.
-
Step 50
50
#ECF9F3
oklch(97.1% 0.016 166.7)
-
Step 100
100
#D5F2E6
oklch(93.7% 0.034 168.8)
-
Step 200
200
#B0E7D1
oklch(88.4% 0.064 168.4)
-
Step 300
300 (this color)
#63D1AB
oklch(78.5% 0.116 168.1)
-
Step 400
400
#00BC90
oklch(70.6% 0.142 168.4)
-
Step 500
500
#00A17B
oklch(63% 0.127 168.5)
-
Step 600
600
#008867
oklch(55.7% 0.112 168.2)
-
Step 700
700
#007256
oklch(49% 0.099 168.4)
-
Step 800
800
#005E46
oklch(42.8% 0.087 168)
-
Step 900
900
#004E3A
oklch(37.7% 0.076 168.5)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#63D1AB 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) | #CCC5A9 | 0.117 |
| Deuteranopia (no green cones) | #BCB9AD | 0.112 |
| Tritanopia (no blue cones) | #34D2C6 | 0.041 |
| Achromatopsia (no color) | #BEBEBE | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D1AB
#63D1AB
oklch(78.5% 0.116 168.1)
- #F09AC6
#F09AC6
oklch(78.5% 0.116 348.1)
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 #63D1AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.011
- Seafoam Blue #78D1B6 ΔE 0.025
- Pale Teal #82CBB2 ΔE 0.035
- Emerald #06D6A0 ΔE 0.044
- Medium Turquoise #48D1CC ΔE 0.047
- Turquoise #40E0D0 ΔE 0.054
- Tiffany Blue #94D2BD ΔE 0.055
- Aqua Marine #2EE8BB ΔE 0.061
Use #63D1AB 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.