#63BCA1
Closest named color: Greeny Blue (#42B395). oklch(73.2% 0.095 171.6), rgb(99, 188, 161).
Aa
Black text reads best on this color (9.23:1).
About this color
#63BCA1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.095 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.041 away. Black text reads best on it, at 9.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 9.23:1 |
| White text | 2.27:1 |
Values
| HEX | #63BCA1 |
| RGB | rgb(99, 188, 161) |
| HSL | hsl(162, 40%, 56%) |
| OKLCH | oklch(73.2% 0.095 171.6) |
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 #63BCA1 | 2.27:1 | Fails | Lc -49.5 | Large or bold text, headings |
| Black text on #63BCA1 | 9.23:1 | AAA | Lc 59.3 | Large or bold text, headings |
| #63BCA1 text on white | 2.27:1 | Fails | Lc 44.6 | Non-text elements, placeholder text |
| #63BCA1 text on black | 9.23:1 | AAA | Lc -57.5 | 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
#DFEEE8
oklch(93.6% 0.018 170.1)
-
Step 200
200
#C4E1D6
oklch(88.5% 0.034 170.7)
-
Step 300
300
#9ACEBC
oklch(81% 0.06 171.4)
-
Step 400
400 (this color)
#63BCA1
oklch(73.2% 0.095 171.6)
-
Step 500
500
#06A180
oklch(63.2% 0.122 171.3)
-
Step 600
600
#00876B
oklch(55.5% 0.108 171.4)
-
Step 700
700
#00725A
oklch(49.2% 0.096 171.5)
-
Step 800
800
#005D49
oklch(42.6% 0.083 171.6)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#032E23
oklch(26.9% 0.05 171.1)
#63BCA1 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) | #B7B2A0 | 0.098 |
| Deuteranopia (no green cones) | #A9A8A3 | 0.094 |
| Tritanopia (no blue cones) | #42BDB4 | 0.032 |
| Achromatopsia (no color) | #ACACAC | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BCA1
#63BCA1
oklch(73.2% 0.095 171.6)
- #D78FAF
#D78FAF
oklch(73.2% 0.096 351.5)
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 #63BCA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.041
- Topaz #13BBAF ΔE 0.043
- Muted Teal #90B494 ΔE 0.047
- Medium Aquamarine #66CDAA ΔE 0.047
- Dark Sea Green #8FBC8F ΔE 0.047
- Light Sea Green #20B2AA ΔE 0.055
- Pale Teal #82CBB2 ΔE 0.057
- Sage Green #88B378 ΔE 0.057
Use #63BCA1 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.