#63D4BA
Closest named color: Seafoam Blue (#78D1B6). oklch(79.7% 0.111 176), rgb(99, 212, 186).
Aa
Black text reads best on this color (11.65:1).
About this color
#63D4BA is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.111 and its hue 176°. 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 11.65:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Seafoam Blue (#78D1B6) |
| Black text | 11.65:1 |
| White text | 1.80:1 |
Values
| HEX | #63D4BA |
| RGB | rgb(99, 212, 186) |
| HSL | hsl(166, 57%, 61%) |
| OKLCH | oklch(79.7% 0.111 176) |
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 #63D4BA | 1.80:1 | Fails | Lc -37.2 | Non-text elements, placeholder text |
| Black text on #63D4BA | 11.65:1 | AAA | Lc 70.6 | Content text, not long reading |
| #63D4BA text on white | 1.80:1 | Fails | Lc 33.2 | Non-text elements, placeholder text |
| #63D4BA text on black | 11.65:1 | AAA | Lc -69.4 | 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
#D5F1E9
oklch(93.6% 0.031 176.6)
-
Step 200
200
#AFE7D8
oklch(88.5% 0.061 176.5)
-
Step 300
300 (this color)
#63D4BA
oklch(79.7% 0.111 176)
-
Step 400
400
#00BB9D
oklch(70.7% 0.133 175.7)
-
Step 500
500
#00A087
oklch(63.1% 0.118 176.3)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#63D4BA 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) | #CDC8B9 | 0.116 |
| Deuteranopia (no green cones) | #BCBCBC | 0.111 |
| Tritanopia (no blue cones) | #25D6CC | 0.034 |
| Achromatopsia (no color) | #C1C1C1 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D4BA
#63D4BA
oklch(79.7% 0.111 176)
- #F69EBF
#F69EBF
oklch(79.6% 0.112 355.9)
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 #63D4BA, 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 0.024
- Pale Teal #82CBB2 ΔE 0.032
- Medium Turquoise #48D1CC ΔE 0.033
- Turquoise #40E0D0 ΔE 0.038
- Tiffany Blue #94D2BD ΔE 0.045
- Dark Turquoise #00CED1 ΔE 0.054
- Emerald #06D6A0 ΔE 0.057
Use #63D4BA 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.