#57AA4F
Closest named color: Fern (#63A950). oklch(66.4% 0.151 142), rgb(87, 170, 79).
Aa
Black text reads best on this color (7.26:1).
About this color
#57AA4F is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.151 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.012 away. Black text reads best on it, at 7.26:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 7.26:1 |
| White text | 2.88:1 |
Values
| HEX | #57AA4F |
| RGB | rgb(87, 170, 79) |
| HSL | hsl(115, 37%, 49%) |
| OKLCH | oklch(66.4% 0.151 142) |
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 #57AA4F | 2.88:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #57AA4F | 7.26:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #57AA4F text on white | 2.88:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #57AA4F text on black | 7.26:1 | AAA | Lc -46.9 | 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 500.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE0C8
oklch(88.4% 0.04 142.9)
-
Step 300
300
#A6CDA1
oklch(80.8% 0.074 141.9)
-
Step 400
400
#74B36D
oklch(70.6% 0.119 141.9)
-
Step 500
500 (this color)
#57AA4F
oklch(66.4% 0.151 142)
-
Step 600
600
#2A8A22
oklch(55.7% 0.165 142)
-
Step 700
700
#1B7514
oklch(49.2% 0.153 142.1)
-
Step 800
800
#1A5F14
oklch(42.7% 0.127 142)
-
Step 900
900
#1D4E19
oklch(37.7% 0.098 142.1)
-
Step 950
950
#122E10
oklch(27.1% 0.063 142.4)
#57AA4F 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) | #AE9C47 | 0.109 |
| Deuteranopia (no green cones) | #A29555 | 0.107 |
| Tritanopia (no blue cones) | #4DA595 | 0.098 |
| Achromatopsia (no color) | #989898 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57AA4F
#57AA4F
oklch(66.4% 0.151 142)
- #BE71CA
#BE71CA
oklch(66.5% 0.151 322)
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 #57AA4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern #63A950 ΔE 0.012
- Dark Pastel Green #56AE57 ΔE 0.012
- Mid Green #50A747 ΔE 0.014
- Medium Green #39AD48 ΔE 0.026
- Algae #54AC68 ΔE 0.028
- Off Green #6BA353 ΔE 0.029
- Muted Green #5FA052 ΔE 0.031
- Leaf #71AA34 ΔE 0.031
Use #57AA4F 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.