#57AF51
Closest named color: Dark Pastel Green (#56AE57). oklch(67.8% 0.156 142.4), rgb(87, 175, 81).
Aa
Black text reads best on this color (7.65:1).
About this color
#57AF51 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.156 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.008 away. Black text reads best on it, at 7.65:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.65:1 |
| White text | 2.74:1 |
Values
| HEX | #57AF51 |
| RGB | rgb(87, 175, 81) |
| HSL | hsl(116, 37%, 50%) |
| OKLCH | oklch(67.8% 0.156 142.4) |
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 #57AF51 | 2.74:1 | Fails | Lc -58.0 | Large or bold text, headings |
| Black text on #57AF51 | 7.65:1 | AAA | Lc 51.3 | Large or bold text, headings |
| #57AF51 text on white | 2.74:1 | Fails | Lc 52.8 | Large or bold text, headings |
| #57AF51 text on black | 7.65:1 | AAA | Lc -49.1 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E0EFDE
oklch(93.6% 0.028 142)
-
Step 200
200
#C5E3C2
oklch(88.5% 0.055 142.6)
-
Step 300
300
#9CD197
oklch(80.9% 0.097 142.5)
-
Step 400
400 (this color)
#57AF51
oklch(67.8% 0.156 142.4)
-
Step 500
500
#23A51E
oklch(63% 0.199 142.4)
-
Step 600
600
#028C00
oklch(55.5% 0.188 142.4)
-
Step 700
700
#017600
oklch(49% 0.167 142.4)
-
Step 800
800
#016100
oklch(42.7% 0.145 142.4)
-
Step 900
900
#005100
oklch(37.7% 0.128 142.5)
-
Step 950
950
#063005
oklch(27.1% 0.083 142.5)
#57AF51 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) | #B3A148 | 0.113 |
| Deuteranopia (no green cones) | #A79958 | 0.113 |
| Tritanopia (no blue cones) | #4CAA9A | 0.101 |
| Achromatopsia (no color) | #9C9C9C | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57AF51
#57AF51
oklch(67.8% 0.156 142.4)
- #C473CF
#C473CF
oklch(67.7% 0.156 322.6)
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 #57AF51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.008
- Fern #63A950 ΔE 0.019
- Mid Green #50A747 ΔE 0.025
- Medium Green #39AD48 ΔE 0.026
- Boring Green #63B365 ΔE 0.028
- Grass #5CAC2D ΔE 0.029
- Leaf #71AA34 ΔE 0.030
- Cool Green #33B864 ΔE 0.030
Use #57AF51 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.