#63CDA3
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.4% 0.117 165.2), rgb(99, 205, 163).
Aa
Black text reads best on this color (10.79:1).
About this color
#63CDA3 is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.117 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 0.010 away. Black text reads best on it, at 10.79:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.79:1 |
| White text | 1.94:1 |
Values
| HEX | #63CDA3 |
| RGB | rgb(99, 205, 163) |
| HSL | hsl(156, 51%, 60%) |
| OKLCH | oklch(77.4% 0.117 165.2) |
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 #63CDA3 | 1.94:1 | Fails | Lc -41.5 | Non-text elements, placeholder text |
| Black text on #63CDA3 | 10.79:1 | AAA | Lc 66.7 | Content text, not long reading |
| #63CDA3 text on white | 1.94:1 | Fails | Lc 37.2 | Non-text elements, placeholder text |
| #63CDA3 text on black | 10.79:1 | AAA | Lc -65.3 | 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
#D6F1E4
oklch(93.5% 0.033 165.1)
-
Step 200
200
#B1E7CF
oklch(88.4% 0.065 165.9)
-
Step 300
300 (this color)
#63CDA3
oklch(77.4% 0.117 165.2)
-
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)
#63CDA3 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) | #C9C1A1 | 0.115 |
| Deuteranopia (no green cones) | #B9B5A6 | 0.112 |
| Tritanopia (no blue cones) | #3BCDC1 | 0.045 |
| Achromatopsia (no color) | #BABABA | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CDA3
#63CDA3
oklch(77.4% 0.117 165.2)
- #EB96C6
#EB96C6
oklch(77.3% 0.118 345.3)
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 #63CDA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.010
- Seafoam Blue #78D1B6 ΔE 0.034
- Pale Teal #82CBB2 ΔE 0.038
- Emerald #06D6A0 ΔE 0.043
- Medium Turquoise #48D1CC ΔE 0.055
- Dark Sea Green #8FBC8F ΔE 0.055
- Soft Green #6FC276 ΔE 0.056
- Greenblue #23C48B ΔE 0.057
Use #63CDA3 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.