#57B258
Closest named color: Dark Pastel Green (#56AE57). oklch(68.6% 0.154 143.9), rgb(87, 178, 88).
Aa
Black text reads best on this color (7.91:1).
About this color
#57B258 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.154 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.012 away. Black text reads best on it, at 7.91:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.91:1 |
| White text | 2.65:1 |
Values
| HEX | #57B258 |
| RGB | rgb(87, 178, 88) |
| HSL | hsl(121, 37%, 52%) |
| OKLCH | oklch(68.6% 0.154 143.9) |
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 #57B258 | 2.65:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #57B258 | 7.91:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #57B258 text on white | 2.65:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #57B258 text on black | 7.91:1 | AAA | Lc -50.5 | 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
#DFEFDE
oklch(93.6% 0.028 143.7)
-
Step 200
200
#C5E3C3
oklch(88.5% 0.054 143.4)
-
Step 300
300
#9BD199
oklch(80.9% 0.096 143.8)
-
Step 400
400 (this color)
#57B258
oklch(68.6% 0.154 143.9)
-
Step 500
500
#19A629
oklch(63.2% 0.197 143.9)
-
Step 600
600
#008C19
oklch(55.6% 0.181 143.9)
-
Step 700
700
#007613
oklch(49.1% 0.16 143.8)
-
Step 800
800
#00610E
oklch(42.8% 0.139 143.9)
-
Step 900
900
#00510A
oklch(37.7% 0.123 143.9)
-
Step 950
950
#053007
oklch(27.1% 0.082 143.6)
#57B258 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) | #B5A450 | 0.114 |
| Deuteranopia (no green cones) | #A99C5E | 0.113 |
| Tritanopia (no blue cones) | #4AAE9D | 0.095 |
| Achromatopsia (no color) | #9F9F9F | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B258
#57B258
oklch(68.6% 0.154 143.9)
- #C876D0
#C876D0
oklch(68.7% 0.155 323.8)
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 #57B258, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.012
- Boring Green #63B365 ΔE 0.020
- Cool Green #33B864 ΔE 0.024
- Fern #63A950 ΔE 0.025
- Algae #54AC68 ΔE 0.030
- Medium Sea Green #3CB371 ΔE 0.031
- Medium Green #39AD48 ΔE 0.033
- Mid Green #50A747 ΔE 0.034
Use #57B258 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.