#57B204
Closest named color: Leafy Green (#51B73B). oklch(68% 0.201 136), rgb(87, 178, 4).
Aa
Black text reads best on this color (7.77:1).
About this color
#57B204 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.201 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.024 away. Black text reads best on it, at 7.77:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.201) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 7.77:1 |
| White text | 2.70:1 |
Values
| HEX | #57B204 |
| RGB | rgb(87, 178, 4) |
| HSL | hsl(91, 96%, 36%) |
| OKLCH | oklch(68% 0.201 136) |
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 #57B204 | 2.70:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #57B204 | 7.77:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #57B204 text on white | 2.70:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #57B204 text on black | 7.77:1 | AAA | Lc -49.9 | 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
#F0F8ED
oklch(97% 0.017 137)
-
Step 100
100
#DFF0D8
oklch(93.6% 0.037 136.4)
-
Step 200
200
#C5E4B7
oklch(88.5% 0.069 136)
-
Step 300
300
#9BD380
oklch(80.8% 0.126 136)
-
Step 400
400 (this color)
#57B204
oklch(68% 0.201 136)
-
Step 500
500
#4EA100
oklch(63.1% 0.188 136)
-
Step 600
600
#408700
oklch(55.5% 0.165 136)
-
Step 700
700
#357200
oklch(49.1% 0.146 136)
-
Step 800
800
#2A5D00
oklch(42.6% 0.127 136)
-
Step 900
900
#224E00
oklch(37.7% 0.112 136.1)
-
Step 950
950
#122F00
oklch(27.2% 0.081 136)
#57B204 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) | #B9A200 | 0.126 |
| Deuteranopia (no green cones) | #AD9B26 | 0.123 |
| Tritanopia (no blue cones) | #52AB97 | 0.145 |
| Achromatopsia (no color) | #9D9D9D | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B204
#57B204
oklch(68% 0.201 136)
- #C769EA
#C769EA
oklch(68% 0.201 316)
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 #57B204, closest first.
No curated palette has a color within ΔE 0.04 of #57B204.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.024
- Leaf Green #5CA904 ΔE 0.025
- Grass #5CAC2D ΔE 0.027
- Frog Green #58BC08 ΔE 0.028
- Leaf #71AA34 ΔE 0.044
- Medium Green #39AD48 ΔE 0.045
- Shamrock #01B44C ΔE 0.045
- Kelly Green #02AB2E ΔE 0.048
Use #57B204 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.