#63D5AB
Closest named color: Medium Aquamarine (#66CDAA). oklch(79.5% 0.121 166.5), rgb(99, 213, 171).
Aa
Black text reads best on this color (11.63:1).
About this color
#63D5AB is a light, moderately saturated green. In OKLCH its lightness is 80%, its chroma 0.121 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 0.022 away. Black text reads best on it, at 11.63:1.
| Hue family | Greens |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 11.63:1 |
| White text | 1.80:1 |
Values
| HEX | #63D5AB |
| RGB | rgb(99, 213, 171) |
| HSL | hsl(158, 58%, 61%) |
| OKLCH | oklch(79.5% 0.121 166.5) |
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 #63D5AB | 1.80:1 | Fails | Lc -37.3 | Non-text elements, placeholder text |
| Black text on #63D5AB | 11.63:1 | AAA | Lc 70.6 | Content text, not long reading |
| #63D5AB text on white | 1.80:1 | Fails | Lc 33.3 | Non-text elements, placeholder text |
| #63D5AB text on black | 11.63:1 | AAA | Lc -69.3 | 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
#D5F2E5
oklch(93.7% 0.035 166.8)
-
Step 200
200
#AFE8CF
oklch(88.5% 0.068 166.1)
-
Step 300
300 (this color)
#63D5AB
oklch(79.5% 0.121 166.5)
-
Step 400
400
#00BD8C
oklch(70.8% 0.147 166.2)
-
Step 500
500
#00A278
oklch(63.2% 0.13 166.5)
-
Step 600
600
#008864
oklch(55.6% 0.115 166.4)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E44
oklch(42.7% 0.088 166.3)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#63D5AB 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) | #D1C8A9 | 0.122 |
| Deuteranopia (no green cones) | #C0BCAE | 0.117 |
| Tritanopia (no blue cones) | #33D6C9 | 0.044 |
| Achromatopsia (no color) | #C1C1C1 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D5AB
#63D5AB
oklch(79.5% 0.121 166.5)
- #F59BCC
#F59BCC
oklch(79.5% 0.123 346.4)
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 #63D5AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.022
- Seafoam Blue #78D1B6 ΔE 0.029
- Pale Teal #82CBB2 ΔE 0.041
- Emerald #06D6A0 ΔE 0.042
- Turquoise #40E0D0 ΔE 0.050
- Aqua Marine #2EE8BB ΔE 0.051
- Medium Turquoise #48D1CC ΔE 0.052
- Tiffany Blue #94D2BD ΔE 0.056
Use #63D5AB 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.