#63CB9F
Closest named color: Medium Aquamarine (#66CDAA). oklch(76.8% 0.117 163.7), rgb(99, 203, 159).
Aa
Black text reads best on this color (10.57:1).
About this color
#63CB9F is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.117 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.015 away. Black text reads best on it, at 10.57:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.57:1 |
| White text | 1.98:1 |
Values
| HEX | #63CB9F |
| RGB | rgb(99, 203, 159) |
| HSL | hsl(155, 50%, 59%) |
| OKLCH | oklch(76.8% 0.117 163.7) |
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 #63CB9F | 1.98:1 | Fails | Lc -42.6 | Non-text elements, placeholder text |
| Black text on #63CB9F | 10.57:1 | AAA | Lc 65.7 | Content text, not long reading |
| #63CB9F text on white | 1.98:1 | Fails | Lc 38.2 | Non-text elements, placeholder text |
| #63CB9F text on black | 10.57:1 | AAA | Lc -64.2 | 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
#EDF9F3
oklch(97.2% 0.015 164.7)
-
Step 100
100
#D6F1E4
oklch(93.5% 0.033 165.1)
-
Step 200
200
#B2E7CD
oklch(88.4% 0.065 163.5)
-
Step 300
300 (this color)
#63CB9F
oklch(76.8% 0.117 163.7)
-
Step 400
400
#00BD86
oklch(70.7% 0.151 163.7)
-
Step 500
500
#00A273
oklch(63.1% 0.134 164)
-
Step 600
600
#008860
oklch(55.5% 0.118 164)
-
Step 700
700
#007350
oklch(49.2% 0.105 163.6)
-
Step 800
800
#005E41
oklch(42.7% 0.091 163.9)
-
Step 900
900
#004F36
oklch(37.9% 0.081 163.8)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#63CB9F 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) | #C8BF9D | 0.115 |
| Deuteranopia (no green cones) | #B8B3A2 | 0.111 |
| Tritanopia (no blue cones) | #3ECBBF | 0.047 |
| Achromatopsia (no color) | #B8B8B8 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CB9F
#63CB9F
oklch(76.8% 0.117 163.7)
- #E895C6
#E895C6
oklch(76.8% 0.117 343.9)
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 #63CB9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.015
- Seafoam Blue #78D1B6 ΔE 0.040
- Pale Teal #82CBB2 ΔE 0.042
- Emerald #06D6A0 ΔE 0.044
- Soft Green #6FC276 ΔE 0.050
- Greenblue #23C48B ΔE 0.052
- Dark Sea Green #8FBC8F ΔE 0.052
- Medium Turquoise #48D1CC ΔE 0.059
Use #63CB9F 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.