#63B899
Closest named color: Greeny Blue (#42B395). oklch(72% 0.095 167.9), rgb(99, 184, 153).
Aa
Black text reads best on this color (8.84:1).
About this color
#63B899 is a medium-light, moderately saturated green. In OKLCH its lightness is 72%, its chroma 0.095 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.031 away. Black text reads best on it, at 8.84:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.84:1 |
| White text | 2.37:1 |
Values
| HEX | #63B899 |
| RGB | rgb(99, 184, 153) |
| HSL | hsl(158, 37%, 55%) |
| OKLCH | oklch(72% 0.095 167.9) |
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 #63B899 | 2.37:1 | Fails | Lc -51.6 | Large or bold text, headings |
| Black text on #63B899 | 8.84:1 | AAA | Lc 57.4 | Large or bold text, headings |
| #63B899 text on white | 2.37:1 | Fails | Lc 46.6 | Large or bold text, headings |
| #63B899 text on black | 8.84:1 | AAA | Lc -55.4 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E0EEE7
oklch(93.7% 0.018 164.6)
-
Step 200
200
#C5E1D5
oklch(88.6% 0.034 167.9)
-
Step 300
300
#9CCEB9
oklch(81% 0.06 167.2)
-
Step 400
400 (this color)
#63B899
oklch(72% 0.095 167.9)
-
Step 500
500
#1BA07B
oklch(63% 0.121 168.1)
-
Step 600
600
#008866
oklch(55.6% 0.113 167.6)
-
Step 700
700
#007256
oklch(49% 0.099 168.4)
-
Step 800
800
#005E46
oklch(42.8% 0.087 168)
-
Step 900
900
#004E3A
oklch(37.7% 0.076 168.5)
-
Step 950
950
#052E22
oklch(27% 0.05 168.8)
#63B899 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) | #B4AE97 | 0.096 |
| Deuteranopia (no green cones) | #A7A49B | 0.093 |
| Tritanopia (no blue cones) | #47B9AF | 0.034 |
| Achromatopsia (no color) | #A8A8A8 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B899
#63B899
oklch(72% 0.095 167.9)
- #D18CAF
#D18CAF
oklch(72% 0.095 347.9)
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 #63B899, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.031
- Topaz #13BBAF ΔE 0.045
- Tea #65AB7C ΔE 0.045
- Muted Teal #90B494 ΔE 0.046
- Faded Green #7BB274 ΔE 0.048
- Dark Sea Green #8FBC8F ΔE 0.049
- Sage Green #88B378 ΔE 0.050
- Light Sea Green #20B2AA ΔE 0.051
Use #63B899 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.