#57A656
Closest named color: Fern (#63A950). oklch(65.5% 0.139 143.6), rgb(87, 166, 86).
Aa
Black text reads best on this color (6.99:1).
About this color
#57A656 is a medium-light, moderately saturated green. In OKLCH its lightness is 66%, its chroma 0.139 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.017 away. Black text reads best on it, at 6.99:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 6.99:1 |
| White text | 3.00:1 |
Values
| HEX | #57A656 |
| RGB | rgb(87, 166, 86) |
| HSL | hsl(119, 32%, 49%) |
| OKLCH | oklch(65.5% 0.139 143.6) |
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 #57A656 | 3.00:1 | AA large text | Lc -61.8 | Content text, not long reading |
| Black text on #57A656 | 6.99:1 | AA | Lc 47.6 | Large or bold text, headings |
| #57A656 text on white | 3.00:1 | AA large text | Lc 56.5 | Large or bold text, headings |
| #57A656 text on black | 6.99:1 | AA | Lc -45.3 | 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 500.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EDE2
oklch(93.5% 0.019 145.4)
-
Step 200
200
#CBE0CA
oklch(88.5% 0.037 144)
-
Step 300
300
#A7CDA5
oklch(81% 0.069 143.6)
-
Step 400
400
#76B274
oklch(70.6% 0.108 143.6)
-
Step 500
500 (this color)
#57A656
oklch(65.5% 0.139 143.6)
-
Step 600
600
#2F8931
oklch(55.7% 0.151 143.5)
-
Step 700
700
#207423
oklch(49.2% 0.141 143.5)
-
Step 800
800
#1E5E1F
oklch(42.6% 0.115 143.4)
-
Step 900
900
#1F4D1F
oklch(37.6% 0.09 143.5)
-
Step 950
950
#132D13
oklch(26.8% 0.057 143.8)
#57A656 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) | #A9994F | 0.103 |
| Deuteranopia (no green cones) | #9E925B | 0.102 |
| Tritanopia (no blue cones) | #4DA293 | 0.087 |
| Achromatopsia (no color) | #959595 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A656
#57A656
oklch(65.5% 0.139 143.6)
- #B971C1
#B971C1
oklch(65.5% 0.139 323.4)
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 #57A656, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern #63A950 ΔE 0.017
- Muted Green #5FA052 ΔE 0.017
- Mid Green #50A747 ΔE 0.020
- Off Green #6BA353 ΔE 0.020
- Algae #54AC68 ΔE 0.023
- Dark Pastel Green #56AE57 ΔE 0.023
- Flat Green #699D4C ΔE 0.027
- Seaweed Green #35AD6B ΔE 0.030
Use #57A656 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.