#257D2A
Closest named color: Tree Green (#2A7E19). oklch(52% 0.145 143.9), rgb(37, 125, 42).
Aa
White text reads best on this color (5.19:1).
About this color
#257D2A is a medium-dark, vivid green. In OKLCH its lightness is 52%, its chroma 0.145 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.014 away. White text reads best on it, at 5.19:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 4.04:1 |
| White text | 5.19:1 |
Values
| HEX | #257D2A |
| RGB | rgb(37, 125, 42) |
| HSL | hsl(123, 54%, 32%) |
| OKLCH | oklch(52% 0.145 143.9) |
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 #257D2A | 5.19:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #257D2A | 4.04:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #257D2A text on white | 5.19:1 | AA | Lc 75.3 | Fine for body text |
| #257D2A text on black | 4.04:1 | AA large text | Lc -26.4 | Dividers and decoration only |
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 700.
-
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
#CAE0C9
oklch(88.4% 0.039 144)
-
Step 300
300
#A6CDA4
oklch(80.9% 0.07 143.6)
-
Step 400
400
#74B373
oklch(70.8% 0.112 143.9)
-
Step 500
500
#4C9F4D
oklch(63.1% 0.143 143.9)
-
Step 600
600
#29892E
oklch(55.5% 0.156 143.8)
-
Step 700
700 (this color)
#257D2A
oklch(52% 0.145 143.9)
-
Step 800
800
#195F1D
oklch(42.7% 0.121 143.9)
-
Step 900
900
#1C4E1E
oklch(37.7% 0.094 144.1)
-
Step 950
950
#122E12
oklch(27.1% 0.06 143.7)
#257D2A 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) | #7F7120 | 0.106 |
| Deuteranopia (no green cones) | #756A31 | 0.106 |
| Tritanopia (no blue cones) | #0B796C | 0.092 |
| Achromatopsia (no color) | #6D6D6D | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257D2A
#257D2A
oklch(52% 0.145 143.9)
- #904797
#904797
oklch(52% 0.144 324)
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 #257D2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.014
- Jungle Green #048243 ΔE 0.026
- Dark Grass Green #388004 ΔE 0.027
- Green #008000 ΔE 0.032
- Forest Green #228B22 ΔE 0.045
- Emerald Green #028F1E ΔE 0.058
- Sea Green #2E8B57 ΔE 0.061
- Kelley Green #009337 ΔE 0.064
Use #257D2A 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.