#63D9BC
Closest named color: Seafoam Blue (#78D1B6). oklch(80.9% 0.115 174.7), rgb(99, 217, 188).
Aa
Black text reads best on this color (12.18:1).
About this color
#63D9BC is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.115 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Seafoam Blue (#78D1B6), ΔE 0.024 away. Black text reads best on it, at 12.18:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Seafoam Blue (#78D1B6) |
| Black text | 12.18:1 |
| White text | 1.72:1 |
Values
| HEX | #63D9BC |
| RGB | rgb(99, 217, 188) |
| HSL | hsl(165, 61%, 62%) |
| OKLCH | oklch(80.9% 0.115 174.7) |
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 #63D9BC | 1.72:1 | Fails | Lc -34.7 | Non-text elements, placeholder text |
| Black text on #63D9BC | 12.18:1 | AAA | Lc 73.0 | Content text, not long reading |
| #63D9BC text on white | 1.72:1 | Fails | Lc 30.9 | Non-text elements, placeholder text |
| #63D9BC text on black | 12.18:1 | AAA | Lc -71.9 | 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
#D4F2E8
oklch(93.7% 0.034 173.5)
-
Step 200
200
#ADE8D6
oklch(88.6% 0.065 174)
-
Step 300
300 (this color)
#63D9BC
oklch(80.9% 0.115 174.7)
-
Step 400
400
#00BB9B
oklch(70.7% 0.134 174.5)
-
Step 500
500
#00A085
oklch(63% 0.119 175)
-
Step 600
600
#00876F
oklch(55.6% 0.106 174.3)
-
Step 700
700
#00715D
oklch(49% 0.093 174.7)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#63D9BC 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) | #D2CDBB | 0.120 |
| Deuteranopia (no green cones) | #C0C0BE | 0.114 |
| Tritanopia (no blue cones) | #1FDBD0 | 0.036 |
| Achromatopsia (no color) | #C5C5C5 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D9BC
#63D9BC
oklch(80.9% 0.115 174.7)
- #FCA1C5
#FCA1C5
oklch(81% 0.116 354.7)
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 #63D9BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seafoam Blue #78D1B6 ΔE 0.024
- Turquoise #40E0D0 ΔE 0.030
- Medium Aquamarine #66CDAA ΔE 0.035
- Medium Turquoise #48D1CC ΔE 0.041
- Pale Teal #82CBB2 ΔE 0.041
- Tiffany Blue #94D2BD ΔE 0.046
- Aqua Marine #2EE8BB ΔE 0.047
- Light Teal #90E4C1 ΔE 0.053
Use #63D9BC 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.