#63CAA4
Closest named color: Medium Aquamarine (#66CDAA). oklch(76.7% 0.112 166.9), rgb(99, 202, 164).
Aa
Black text reads best on this color (10.51:1).
About this color
#63CAA4 is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.112 and its hue 167°. 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 10.51:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.51:1 |
| White text | 1.99:1 |
Values
| HEX | #63CAA4 |
| RGB | rgb(99, 202, 164) |
| HSL | hsl(158, 49%, 59%) |
| OKLCH | oklch(76.7% 0.112 166.9) |
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 #63CAA4 | 1.99:1 | Fails | Lc -42.9 | Non-text elements, placeholder text |
| Black text on #63CAA4 | 10.51:1 | AAA | Lc 65.5 | Content text, not long reading |
| #63CAA4 text on white | 1.99:1 | Fails | Lc 38.5 | Non-text elements, placeholder text |
| #63CAA4 text on black | 10.51:1 | AAA | Lc -63.9 | 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
#D6F1E5
oklch(93.5% 0.033 167.1)
-
Step 200
200
#B2E7D0
oklch(88.5% 0.063 166.5)
-
Step 300
300 (this color)
#63CAA4
oklch(76.7% 0.112 166.9)
-
Step 400
400
#00BC8D
oklch(70.6% 0.145 167)
-
Step 500
500
#00A279
oklch(63.2% 0.13 167)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#63CAA4 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) | #C6BEA2 | 0.113 |
| Deuteranopia (no green cones) | #B6B3A6 | 0.107 |
| Tritanopia (no blue cones) | #3CCBBF | 0.041 |
| Achromatopsia (no color) | #B7B7B7 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CAA4
#63CAA4
oklch(76.7% 0.112 166.9)
- #E795C1
#E795C1
oklch(76.5% 0.112 346.7)
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 #63CAA4, 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 0.036
- Pale Teal #82CBB2 ΔE 0.037
- Emerald #06D6A0 ΔE 0.049
- Dark Sea Green #8FBC8F ΔE 0.051
- Medium Turquoise #48D1CC ΔE 0.053
- Greenblue #23C48B ΔE 0.055
- Soft Green #6FC276 ΔE 0.056
Use #63CAA4 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.