#63CEA5
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.7% 0.117 165.9), rgb(99, 206, 165).
Aa
Black text reads best on this color (10.90:1).
About this color
#63CEA5 is a medium-light, moderately saturated green. In OKLCH its lightness is 78%, its chroma 0.117 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.009 away. Black text reads best on it, at 10.90:1.
| Hue family | Greens |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.90:1 |
| White text | 1.92:1 |
Values
| HEX | #63CEA5 |
| RGB | rgb(99, 206, 165) |
| HSL | hsl(157, 52%, 60%) |
| OKLCH | oklch(77.7% 0.117 165.9) |
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 #63CEA5 | 1.92:1 | Fails | Lc -40.9 | Non-text elements, placeholder text |
| Black text on #63CEA5 | 10.90:1 | AAA | Lc 67.3 | Content text, not long reading |
| #63CEA5 text on white | 1.92:1 | Fails | Lc 36.6 | Non-text elements, placeholder text |
| #63CEA5 text on black | 10.90:1 | AAA | Lc -65.8 | 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
#D6F2E5
oklch(93.7% 0.034 166)
-
Step 200
200
#B1E7CF
oklch(88.4% 0.065 165.9)
-
Step 300
300 (this color)
#63CEA5
oklch(77.7% 0.117 165.9)
-
Step 400
400
#00BD8B
oklch(70.8% 0.147 165.8)
-
Step 500
500
#00A277
oklch(63.2% 0.131 166)
-
Step 600
600
#008863
oklch(55.6% 0.116 165.8)
-
Step 700
700
#007253
oklch(49% 0.101 166.2)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#63CEA5 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) | #CAC2A3 | 0.116 |
| Deuteranopia (no green cones) | #BAB6A8 | 0.112 |
| Tritanopia (no blue cones) | #3ACEC2 | 0.044 |
| Achromatopsia (no color) | #BBBBBB | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CEA5
#63CEA5
oklch(77.7% 0.117 165.9)
- #EC97C6
#EC97C6
oklch(77.6% 0.117 345.9)
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 #63CEA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.009
- Seafoam Blue #78D1B6 ΔE 0.032
- Pale Teal #82CBB2 ΔE 0.037
- Emerald #06D6A0 ΔE 0.043
- Medium Turquoise #48D1CC ΔE 0.053
- Dark Sea Green #8FBC8F ΔE 0.057
- Soft Green #6FC276 ΔE 0.059
- Greenblue #23C48B ΔE 0.059
Use #63CEA5 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.