#57B657
Closest named color: Cool Green (#33B864). oklch(69.6% 0.16 143.6), rgb(87, 182, 87).
Aa
Black text reads best on this color (8.23:1).
About this color
#57B657 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.160 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.023 away. Black text reads best on it, at 8.23:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.23:1 |
| White text | 2.55:1 |
Values
| HEX | #57B657 |
| RGB | rgb(87, 182, 87) |
| HSL | hsl(120, 39%, 53%) |
| OKLCH | oklch(69.6% 0.16 143.6) |
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 #57B657 | 2.55:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #57B657 | 8.23:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #57B657 text on white | 2.55:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #57B657 text on black | 8.23:1 | AAA | Lc -52.3 | 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
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDE
oklch(93.6% 0.028 143.7)
-
Step 200
200
#C4E3C2
oklch(88.4% 0.055 143.5)
-
Step 300
300
#99D297
oklch(80.9% 0.101 143.8)
-
Step 400
400 (this color)
#57B657
oklch(69.6% 0.16 143.6)
-
Step 500
500
#08A61F
oklch(63% 0.204 143.6)
-
Step 600
600
#008C16
oklch(55.5% 0.182 143.6)
-
Step 700
700
#007611
oklch(49.1% 0.161 143.6)
-
Step 800
800
#00610C
oklch(42.7% 0.14 143.6)
-
Step 900
900
#005108
oklch(37.7% 0.124 143.6)
-
Step 950
950
#033005
oklch(27% 0.084 143.5)
#57B657 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) | #B9A74F | 0.119 |
| Deuteranopia (no green cones) | #AD9F5E | 0.118 |
| Tritanopia (no blue cones) | #49B1A0 | 0.101 |
| Achromatopsia (no color) | #A2A2A2 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B657
#57B657
oklch(69.6% 0.16 143.6)
- #CD77D5
#CD77D5
oklch(69.6% 0.161 324)
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 #57B657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.023
- Dark Pastel Green #56AE57 ΔE 0.024
- Boring Green #63B365 ΔE 0.024
- Leafy Green #51B73B ΔE 0.029
- Turtle Green #75B84F ΔE 0.029
- Dark Mint #48C072 ΔE 0.034
- Fern #63A950 ΔE 0.036
- Medium Sea Green #3CB371 ΔE 0.036
Use #57B657 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.