#63D1BB
Closest named color: Seafoam Blue (#78D1B6). oklch(79% 0.107 178.4), rgb(99, 209, 187).
Aa
Black text reads best on this color (11.36:1).
About this color
#63D1BB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.107 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Seafoam Blue (#78D1B6), ΔE 0.017 away. Black text reads best on it, at 11.36:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Seafoam Blue (#78D1B6) |
| Black text | 11.36:1 |
| White text | 1.84:1 |
Values
| HEX | #63D1BB |
| RGB | rgb(99, 209, 187) |
| HSL | hsl(168, 54%, 60%) |
| OKLCH | oklch(79% 0.107 178.4) |
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 #63D1BB | 1.84:1 | Fails | Lc -38.7 | Non-text elements, placeholder text |
| Black text on #63D1BB | 11.36:1 | AAA | Lc 69.4 | Content text, not long reading |
| #63D1BB text on white | 1.84:1 | Fails | Lc 34.5 | Non-text elements, placeholder text |
| #63D1BB text on black | 11.36:1 | AAA | Lc -68.1 | 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
#ECF9F5
oklch(97.1% 0.015 175.7)
-
Step 100
100
#D5F1EA
oklch(93.6% 0.031 178.9)
-
Step 200
200
#AFE7D9
oklch(88.6% 0.06 177.8)
-
Step 300
300 (this color)
#63D1BB
oklch(79% 0.107 178.4)
-
Step 400
400
#00BAA1
oklch(70.6% 0.129 178.5)
-
Step 500
500
#00A08A
oklch(63.2% 0.116 178.3)
-
Step 600
600
#008674
oklch(55.5% 0.101 178.9)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D4F
oklch(42.8% 0.079 177.8)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#63D1BB 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) | #CAC6BA | 0.113 |
| Deuteranopia (no green cones) | #B8B9BD | 0.107 |
| Tritanopia (no blue cones) | #25D4CA | 0.032 |
| Achromatopsia (no color) | #BFBFBF | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D1BB
#63D1BB
oklch(79% 0.107 178.4)
- #F39DBA
#F39DBA
oklch(79% 0.108 358.1)
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 #63D1BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seafoam Blue #78D1B6 ΔE 0.017
- Medium Aquamarine #66CDAA ΔE 0.023
- Medium Turquoise #48D1CC ΔE 0.027
- Pale Teal #82CBB2 ΔE 0.028
- Turquoise #40E0D0 ΔE 0.043
- Tiffany Blue #94D2BD ΔE 0.046
- Dark Turquoise #00CED1 ΔE 0.048
- Emerald #06D6A0 ΔE 0.061
Use #63D1BB 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.