#63CFB8
Closest named color: Medium Aquamarine (#66CDAA). oklch(78.4% 0.106 177.5), rgb(99, 207, 184).
Aa
Black text reads best on this color (11.14:1).
About this color
#63CFB8 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.106 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.018 away. Black text reads best on it, at 11.14:1.
| Hue family | Teals and cyans |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 11.14:1 |
| White text | 1.88:1 |
Values
| HEX | #63CFB8 |
| RGB | rgb(99, 207, 184) |
| HSL | hsl(167, 53%, 60%) |
| OKLCH | oklch(78.4% 0.106 177.5) |
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 #63CFB8 | 1.88:1 | Fails | Lc -39.7 | Non-text elements, placeholder text |
| Black text on #63CFB8 | 11.14:1 | AAA | Lc 68.4 | Content text, not long reading |
| #63CFB8 text on white | 1.88:1 | Fails | Lc 35.5 | Non-text elements, placeholder text |
| #63CFB8 text on black | 11.14:1 | AAA | Lc -67.0 | 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
#B0E6D9
oklch(88.4% 0.058 178.5)
-
Step 300
300 (this color)
#63CFB8
oklch(78.4% 0.106 177.5)
-
Step 400
400
#00BBA0
oklch(70.8% 0.131 177.4)
-
Step 500
500
#00A089
oklch(63.1% 0.116 177.6)
-
Step 600
600
#008673
oklch(55.5% 0.102 178.1)
-
Step 700
700
#007160
oklch(49.1% 0.091 177.4)
-
Step 800
800
#005D4E
oklch(42.8% 0.079 176.7)
-
Step 900
900
#004D41
oklch(37.6% 0.069 177.7)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#63CFB8 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) | #C8C4B7 | 0.112 |
| Deuteranopia (no green cones) | #B7B8BA | 0.106 |
| Tritanopia (no blue cones) | #2AD2C8 | 0.032 |
| Achromatopsia (no color) | #BDBDBD | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CFB8
#63CFB8
oklch(78.4% 0.106 177.5)
- #F09CB9
#F09CB9
oklch(78.5% 0.106 357.5)
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 #63CFB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.018
- Seafoam Blue #78D1B6 ΔE 0.019
- Pale Teal #82CBB2 ΔE 0.027
- Medium Turquoise #48D1CC ΔE 0.029
- Turquoise #40E0D0 ΔE 0.048
- Tiffany Blue #94D2BD ΔE 0.048
- Dark Turquoise #00CED1 ΔE 0.048
- Emerald #06D6A0 ΔE 0.060
Use #63CFB8 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.