#63D9AB
Closest named color: Medium Aquamarine (#66CDAA). oklch(80.5% 0.127 165.1), rgb(99, 217, 171).
Aa
Black text reads best on this color (12.04:1).
About this color
#63D9AB is a light, moderately saturated green. In OKLCH its lightness is 80%, its chroma 0.127 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.034 away. Black text reads best on it, at 12.04:1.
| Hue family | Greens |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 12.04:1 |
| White text | 1.74:1 |
Values
| HEX | #63D9AB |
| RGB | rgb(99, 217, 171) |
| HSL | hsl(157, 61%, 62%) |
| OKLCH | oklch(80.5% 0.127 165.1) |
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 #63D9AB | 1.74:1 | Fails | Lc -35.4 | Non-text elements, placeholder text |
| Black text on #63D9AB | 12.04:1 | AAA | Lc 72.4 | Content text, not long reading |
| #63D9AB text on white | 1.74:1 | Fails | Lc 31.5 | Non-text elements, placeholder text |
| #63D9AB text on black | 12.04:1 | AAA | Lc -71.3 | 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
#D4F2E4
oklch(93.6% 0.037 165.8)
-
Step 200
200
#AEE9CE
oklch(88.6% 0.071 165)
-
Step 300
300 (this color)
#63D9AB
oklch(80.5% 0.127 165.1)
-
Step 400
400
#00BD89
oklch(70.7% 0.149 164.9)
-
Step 500
500
#00A275
oklch(63.1% 0.133 165)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F1F
oklch(27% 0.057 164.4)
#63D9AB 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) | #D5CBA9 | 0.126 |
| Deuteranopia (no green cones) | #C4BFAE | 0.121 |
| Tritanopia (no blue cones) | #31D9CC | 0.049 |
| Achromatopsia (no color) | #C4C4C4 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D9AB
#63D9AB
oklch(80.5% 0.127 165.1)
- #F99DD2
#F99DD2
oklch(80.4% 0.127 344.8)
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 #63D9AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.034
- Seafoam Blue #78D1B6 ΔE 0.035
- Aqua Marine #2EE8BB ΔE 0.042
- Emerald #06D6A0 ΔE 0.043
- Turquoise #40E0D0 ΔE 0.048
- Pale Teal #82CBB2 ΔE 0.049
- Aqua Green #12E193 ΔE 0.057
- Tiffany Blue #94D2BD ΔE 0.059
Use #63D9AB 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.