#63BEA4
Closest named color: Medium Aquamarine (#66CDAA). oklch(73.8% 0.096 172.8), rgb(99, 190, 164).
Aa
Black text reads best on this color (9.43:1).
About this color
#63BEA4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.096 and its hue 173°. 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 9.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 9.43:1 |
| White text | 2.22:1 |
Values
| HEX | #63BEA4 |
| RGB | rgb(99, 190, 164) |
| HSL | hsl(163, 41%, 57%) |
| OKLCH | oklch(73.8% 0.096 172.8) |
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 #63BEA4 | 2.22:1 | Fails | Lc -48.5 | Large or bold text, headings |
| Black text on #63BEA4 | 9.43:1 | AAA | Lc 60.3 | Content text, not long reading |
| #63BEA4 text on white | 2.22:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #63BEA4 text on black | 9.43:1 | AAA | Lc -58.5 | 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
#DFEEE9
oklch(93.7% 0.017 174)
-
Step 200
200
#C4E1D7
oklch(88.6% 0.034 172.7)
-
Step 300
300
#99CEBD
oklch(81% 0.06 173)
-
Step 400
400 (this color)
#63BEA4
oklch(73.8% 0.096 172.8)
-
Step 500
500
#00A182
oklch(63.2% 0.122 172.6)
-
Step 600
600
#00876D
oklch(55.6% 0.107 172.9)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#012E24
oklch(26.9% 0.051 173.5)
#63BEA4 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) | #B9B4A3 | 0.100 |
| Deuteranopia (no green cones) | #AAA9A6 | 0.096 |
| Tritanopia (no blue cones) | #40C0B6 | 0.030 |
| Achromatopsia (no color) | #AEAEAE | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BEA4
#63BEA4
oklch(73.8% 0.096 172.8)
- #DA91B0
#DA91B0
oklch(73.9% 0.096 352.6)
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 #63BEA4, 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
- Greeny Blue #42B395 ΔE 0.046
- Dark Sea Green #8FBC8F ΔE 0.047
- Muted Teal #90B494 ΔE 0.049
- Pale Teal #82CBB2 ΔE 0.051
- Light Sea Green #20B2AA ΔE 0.058
- Green Blue #01C08D ΔE 0.059
Use #63BEA4 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.