#63BFAC
Closest named color: Medium Aquamarine (#66CDAA). oklch(74.2% 0.093 178.5), rgb(99, 191, 172).
Aa
Black text reads best on this color (9.57:1).
About this color
#63BFAC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.093 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.042 away. Black text reads best on it, at 9.57:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 9.57:1 |
| White text | 2.19:1 |
Values
| HEX | #63BFAC |
| RGB | rgb(99, 191, 172) |
| HSL | hsl(168, 42%, 57%) |
| OKLCH | oklch(74.2% 0.093 178.5) |
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 #63BFAC | 2.19:1 | Fails | Lc -47.7 | Large or bold text, headings |
| Black text on #63BFAC | 9.57:1 | AAA | Lc 61.0 | Content text, not long reading |
| #63BFAC text on white | 2.19:1 | Fails | Lc 43.0 | Non-text elements, placeholder text |
| #63BFAC text on black | 9.57:1 | AAA | Lc -59.2 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F7F5
oklch(97% 0.008 177.3)
-
Step 100
100
#DFEEEA
oklch(93.7% 0.017 178.3)
-
Step 200
200
#C4E1D9
oklch(88.6% 0.033 177.1)
-
Step 300
300
#98CDC1
oklch(80.8% 0.058 179.2)
-
Step 400
400 (this color)
#63BFAC
oklch(74.2% 0.093 178.5)
-
Step 500
500
#00A08A
oklch(63.2% 0.116 178.3)
-
Step 600
600
#008674
oklch(55.5% 0.101 178.9)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D4F
oklch(42.8% 0.079 177.8)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#012E27
oklch(27% 0.048 179.3)
#63BFAC 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) | #B9B5AB | 0.099 |
| Deuteranopia (no green cones) | #AAABAE | 0.093 |
| Tritanopia (no blue cones) | #3AC1B9 | 0.028 |
| Achromatopsia (no color) | #AFAFAF | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BFAC
#63BFAC
oklch(74.2% 0.093 178.5)
- #DC93AB
#DC93AB
oklch(74.3% 0.093 358.3)
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 #63BFAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.042
- Topaz #13BBAF ΔE 0.044
- Pale Teal #82CBB2 ΔE 0.047
- Muted Teal #90B494 ΔE 0.052
- Dark Sea Green #8FBC8F ΔE 0.052
- Greeny Blue #42B395 ΔE 0.053
- Medium Turquoise #48D1CC ΔE 0.055
- Seafoam Blue #78D1B6 ΔE 0.056
Use #63BFAC 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.