#63B990
Closest named color: Greeny Blue (#42B395). oklch(72% 0.104 161.5), rgb(99, 185, 144).
Aa
Black text reads best on this color (8.87:1).
About this color
#63B990 is a medium-light, moderately saturated green. In OKLCH its lightness is 72%, its chroma 0.104 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.033 away. Black text reads best on it, at 8.87:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.87:1 |
| White text | 2.36:1 |
Values
| HEX | #63B990 |
| RGB | rgb(99, 185, 144) |
| HSL | hsl(151, 38%, 56%) |
| OKLCH | oklch(72% 0.104 161.5) |
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 #63B990 | 2.36:1 | Fails | Lc -51.4 | Large or bold text, headings |
| Black text on #63B990 | 8.87:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #63B990 text on white | 2.36:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #63B990 text on black | 8.87:1 | AAA | Lc -55.6 | 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
#E0EEE6
oklch(93.6% 0.018 161.1)
-
Step 200
200
#C5E1D2
oklch(88.5% 0.036 162.3)
-
Step 300
300
#9CCEB3
oklch(80.9% 0.065 160.9)
-
Step 400
400 (this color)
#63B990
oklch(72% 0.104 161.5)
-
Step 500
500
#1BA26F
oklch(63.2% 0.134 161.2)
-
Step 600
600
#00895C
oklch(55.7% 0.123 161.5)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#004F33
oklch(37.8% 0.084 161.3)
-
Step 950
950
#052E1E
oklch(26.8% 0.054 162.4)
#63B990 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) | #B7AE8E | 0.101 |
| Deuteranopia (no green cones) | #AAA592 | 0.097 |
| Tritanopia (no blue cones) | #4BB9AE | 0.044 |
| Achromatopsia (no color) | #A8A8A8 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B990
#63B990
oklch(72% 0.104 161.5)
- #D18AB8
#D18AB8
oklch(71.9% 0.105 340.9)
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 #63B990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.033
- Faded Green #7BB274 ΔE 0.038
- Tea #65AB7C ΔE 0.041
- Sage Green #88B378 ΔE 0.042
- Green Blue #01C08D ΔE 0.046
- Dark Sea Green #8FBC8F ΔE 0.047
- Lichen #8FB67B ΔE 0.048
- Sage #87AE73 ΔE 0.048
Use #63B990 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.