#57AA59
Closest named color: Fern (#63A950). oklch(66.6% 0.142 144.2), rgb(87, 170, 89).
Aa
Black text reads best on this color (7.29:1).
About this color
#57AA59 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.142 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.012 away. Black text reads best on it, at 7.29:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 7.29:1 |
| White text | 2.87:1 |
Values
| HEX | #57AA59 |
| RGB | rgb(87, 170, 89) |
| HSL | hsl(121, 33%, 50%) |
| OKLCH | oklch(66.6% 0.142 144.2) |
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 #57AA59 | 2.87:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #57AA59 | 7.29:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #57AA59 text on white | 2.87:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #57AA59 text on black | 7.29:1 | AAA | Lc -47.0 | 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
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#CAE0CA
oklch(88.4% 0.038 145.2)
-
Step 300
300
#A6CDA5
oklch(80.9% 0.069 144.3)
-
Step 400
400
#74B374
oklch(70.8% 0.111 144.3)
-
Step 500
500 (this color)
#57AA59
oklch(66.6% 0.142 144.2)
-
Step 600
600
#298931
oklch(55.5% 0.153 144.4)
-
Step 700
700
#1A7423
oklch(49% 0.143 144.3)
-
Step 800
800
#1A5F1F
oklch(42.8% 0.119 144.2)
-
Step 900
900
#1D4E1F
oklch(37.8% 0.093 144.2)
-
Step 950
950
#122E13
oklch(27.1% 0.059 144.4)
#57AA59 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) | #AD9D52 | 0.107 |
| Deuteranopia (no green cones) | #A1955E | 0.106 |
| Tritanopia (no blue cones) | #4BA697 | 0.088 |
| Achromatopsia (no color) | #989898 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57AA59
#57AA59
oklch(66.6% 0.142 144.2)
- #BE73C4
#BE73C4
oklch(66.5% 0.142 324.3)
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 #57AA59, 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 0.013
- Algae #54AC68 ΔE 0.017
- Mid Green #50A747 ΔE 0.022
- Off Green #6BA353 ΔE 0.024
- Seaweed Green #35AD6B ΔE 0.026
- Muted Green #5FA052 ΔE 0.027
- Jade Green #2BAF6A ΔE 0.029
Use #57AA59 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.