#63CEB5
Closest named color: Medium Aquamarine (#66CDAA). oklch(78.1% 0.106 176), rgb(99, 206, 181).
Aa
Black text reads best on this color (11.02:1).
About this color
#63CEB5 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.106 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.015 away. Black text reads best on it, at 11.02:1.
| Hue family | Teals and cyans |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 11.02:1 |
| White text | 1.90:1 |
Values
| HEX | #63CEB5 |
| RGB | rgb(99, 206, 181) |
| HSL | hsl(166, 52%, 60%) |
| OKLCH | oklch(78.1% 0.106 176) |
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 #63CEB5 | 1.90:1 | Fails | Lc -40.3 | Non-text elements, placeholder text |
| Black text on #63CEB5 | 11.02:1 | AAA | Lc 67.8 | Content text, not long reading |
| #63CEB5 text on white | 1.90:1 | Fails | Lc 36.1 | Non-text elements, placeholder text |
| #63CEB5 text on black | 11.02:1 | AAA | Lc -66.4 | 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
#D6F1E9
oklch(93.6% 0.03 175.9)
-
Step 200
200
#B1E6D7
oklch(88.4% 0.058 175.7)
-
Step 300
300 (this color)
#63CEB5
oklch(78.1% 0.106 176)
-
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)
#63CEB5 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) | #C7C3B4 | 0.111 |
| Deuteranopia (no green cones) | #B7B7B7 | 0.106 |
| Tritanopia (no blue cones) | #2DD0C6 | 0.033 |
| Achromatopsia (no color) | #BCBCBC | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CEB5
#63CEB5
oklch(78.1% 0.106 176)
- #EE9BBA
#EE9BBA
oklch(78.1% 0.106 355.8)
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 #63CEB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.015
- Seafoam Blue #78D1B6 ΔE 0.021
- Pale Teal #82CBB2 ΔE 0.027
- Medium Turquoise #48D1CC ΔE 0.032
- Dark Turquoise #00CED1 ΔE 0.050
- Tiffany Blue #94D2BD ΔE 0.051
- Turquoise #40E0D0 ΔE 0.052
- Emerald #06D6A0 ΔE 0.058
Use #63CEB5 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.