#63C3AA
Closest named color: Medium Aquamarine (#66CDAA). oklch(75.1% 0.099 174.4), rgb(99, 195, 170).
Aa
Black text reads best on this color (9.91:1).
About this color
#63C3AA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.099 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.029 away. Black text reads best on it, at 9.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 9.91:1 |
| White text | 2.11:1 |
Values
| HEX | #63C3AA |
| RGB | rgb(99, 195, 170) |
| HSL | hsl(164, 44%, 58%) |
| OKLCH | oklch(75.1% 0.099 174.4) |
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 #63C3AA | 2.11:1 | Fails | Lc -45.9 | Large or bold text, headings |
| Black text on #63C3AA | 9.91:1 | AAA | Lc 62.6 | Content text, not long reading |
| #63C3AA text on white | 2.11:1 | Fails | Lc 41.3 | Non-text elements, placeholder text |
| #63C3AA text on black | 9.91:1 | AAA | Lc -60.9 | 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 400.
-
Step 50
50
#F0F7F5
oklch(97% 0.008 177.3)
-
Step 100
100
#DEEEE9
oklch(93.6% 0.018 175.3)
-
Step 200
200
#C3E1D7
oklch(88.5% 0.034 173.4)
-
Step 300
300
#97CEBE
oklch(80.9% 0.061 174.8)
-
Step 400
400 (this color)
#63C3AA
oklch(75.1% 0.099 174.4)
-
Step 500
500
#00A084
oklch(63% 0.119 174.3)
-
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)
#63C3AA 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) | #BDB9A9 | 0.103 |
| Deuteranopia (no green cones) | #AEAEAC | 0.098 |
| Tritanopia (no blue cones) | #3AC5BC | 0.032 |
| Achromatopsia (no color) | #B2B2B2 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63C3AA
#63C3AA
oklch(75.1% 0.099 174.4)
- #E094B2
#E094B2
oklch(75.1% 0.099 354.4)
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 #63C3AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.029
- Pale Teal #82CBB2 ΔE 0.040
- Seafoam Blue #78D1B6 ΔE 0.046
- Dark Sea Green #8FBC8F ΔE 0.049
- Topaz #13BBAF ΔE 0.050
- Medium Turquoise #48D1CC ΔE 0.051
- Muted Teal #90B494 ΔE 0.055
- Greeny Blue #42B395 ΔE 0.058
Use #63C3AA 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.