#63B577
Closest named color: Boring Green (#63B365). oklch(70.5% 0.121 150.2), rgb(99, 181, 119).
Aa
Black text reads best on this color (8.40:1).
About this color
#63B577 is a medium-light, moderately saturated green. In OKLCH its lightness is 70%, its chroma 0.121 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Boring Green (#63B365), ΔE 0.022 away. Black text reads best on it, at 8.40:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Boring Green (#63B365) |
| Black text | 8.40:1 |
| White text | 2.49:1 |
Values
| HEX | #63B577 |
| RGB | rgb(99, 181, 119) |
| HSL | hsl(135, 36%, 55%) |
| OKLCH | oklch(70.5% 0.121 150.2) |
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 #63B577 | 2.49:1 | Fails | Lc -53.9 | Large or bold text, headings |
| Black text on #63B577 | 8.40:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #63B577 text on white | 2.49:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #63B577 text on black | 8.40:1 | AAA | Lc -53.1 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E0EEE2
oklch(93.5% 0.022 149.7)
-
Step 200
200
#C6E1CB
oklch(88.4% 0.041 150.8)
-
Step 300
300
#9ECFA7
oklch(80.9% 0.076 150)
-
Step 400
400 (this color)
#63B577
oklch(70.5% 0.121 150.2)
-
Step 500
500
#2BA354
oklch(63.2% 0.156 150.2)
-
Step 600
600
#008B3F
oklch(55.7% 0.153 150.2)
-
Step 700
700
#007534
oklch(49.2% 0.135 150.2)
-
Step 800
800
#006029
oklch(42.7% 0.118 150)
-
Step 900
900
#035022
oklch(37.8% 0.102 150.1)
-
Step 950
950
#082F15
oklch(27.1% 0.064 150.5)
#63B577 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) | #B6A973 | 0.102 |
| Deuteranopia (no green cones) | #AAA17B | 0.100 |
| Tritanopia (no blue cones) | #54B2A5 | 0.067 |
| Achromatopsia (no color) | #A4A4A4 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B577
#63B577
oklch(70.5% 0.121 150.2)
- #CA83C4
#CA83C4
oklch(70.4% 0.122 329.8)
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 #63B577, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Boring Green #63B365 ΔE 0.022
- Faded Green #7BB274 ΔE 0.024
- Tea #65AB7C ΔE 0.032
- Medium Sea Green #3CB371 ΔE 0.032
- Algae #54AC68 ΔE 0.034
- Dark Seafoam Green #3EAF76 ΔE 0.036
- Dusty Green #76A973 ΔE 0.036
- Dark Mint #48C072 ΔE 0.038
Use #63B577 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.