#63E4D4
Closest named color: Turquoise (#40E0D0). oklch(84.2% 0.116 184.2), rgb(99, 228, 212).
Aa
Black text reads best on this color (13.57:1).
About this color
#63E4D4 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 84%, its chroma 0.116 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.025 away. Black text reads best on it, at 13.57:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 13.57:1 |
| White text | 1.54:1 |
Values
| HEX | #63E4D4 |
| RGB | rgb(99, 228, 212) |
| HSL | hsl(173, 70%, 64%) |
| OKLCH | oklch(84.2% 0.116 184.2) |
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 #63E4D4 | 1.54:1 | Fails | Lc -28.2 | Dividers and decoration only |
| Black text on #63E4D4 | 13.57:1 | AAA | Lc 78.9 | Fine for body text |
| #63E4D4 text on white | 1.54:1 | Fails | Lc 24.9 | Dividers and decoration only |
| #63E4D4 text on black | 13.57:1 | AAA | Lc -78.2 | Fine for body text |
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
#EBF9F7
oklch(97.1% 0.015 186.7)
-
Step 100
100
#D2F2EC
oklch(93.6% 0.034 183)
-
Step 200
200
#A9E8DE
oklch(88.6% 0.065 184)
-
Step 300
300 (this color)
#63E4D4
oklch(84.2% 0.116 184.2)
-
Step 400
400
#00B9AA
oklch(70.6% 0.125 184.7)
-
Step 500
500
#009F91
oklch(63.1% 0.112 184)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#63E4D4 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) | #DAD8D3 | 0.124 |
| Deuteranopia (no green cones) | #C6CAD6 | 0.117 |
| Tritanopia (no blue cones) | #00E8DF | 0.031 |
| Achromatopsia (no color) | #D0D0D0 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63E4D4
#63E4D4
oklch(84.2% 0.116 184.2)
- #FFB3C4
#FFB3C4
oklch(84.3% 0.091 4.5)
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 #63E4D4, closest first.
No curated palette has a color within ΔE 0.04 of #63E4D4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.025
- Light Teal #90E4C1 ΔE 0.041
- Aqua Marine #2EE8BB ΔE 0.050
- Seafoam Blue #78D1B6 ΔE 0.055
- Light Turquoise #7EF4CC ΔE 0.055
- Bright Aqua #0BF9EA ΔE 0.057
- Tiffany Blue #94D2BD ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.057
Use #63E4D4 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.