#256E39
Closest named color: Dark Olive Green (#556B2F). oklch(47.9% 0.11 149.3), rgb(37, 110, 57).
Aa
White text reads best on this color (6.23:1).
About this color
#256E39 is a medium-dark, moderately saturated green. In OKLCH its lightness is 48%, its chroma 0.110 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive Green (#556B2F), ΔE 0.048 away. White text reads best on it, at 6.23:1.
| Hue family | Greens |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Olive Green (#556B2F) |
| Black text | 3.36:1 |
| White text | 6.23:1 |
Values
| HEX | #256E39 |
| RGB | rgb(37, 110, 57) |
| HSL | hsl(136, 50%, 29%) |
| OKLCH | oklch(47.9% 0.11 149.3) |
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 #256E39 | 6.23:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #256E39 | 3.36:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #256E39 text on white | 6.23:1 | AA | Lc 80.8 | Fine for body text |
| #256E39 text on black | 3.36:1 | AA large text | Lc -21.1 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE4
oklch(93.6% 0.016 148.4)
-
Step 200
200
#CCDFCF
oklch(88.5% 0.03 150.1)
-
Step 300
300
#A9CBAE
oklch(80.9% 0.054 149.2)
-
Step 400
400
#7AB084
oklch(70.7% 0.086 149.6)
-
Step 500
500
#569C64
oklch(63.2% 0.11 148.9)
-
Step 600
600
#38864B
oklch(55.6% 0.119 149.1)
-
Step 700
700 (this color)
#256E39
oklch(47.9% 0.11 149.3)
-
Step 800
800
#245C32
oklch(42.6% 0.091 149.3)
-
Step 900
900
#234C2C
oklch(37.7% 0.071 149.1)
-
Step 950
950
#152D1A
oklch(27.1% 0.046 149.2)
#256E39 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) | #6F6435 | 0.091 |
| Deuteranopia (no green cones) | #665E3D | 0.090 |
| Tritanopia (no blue cones) | #0D6C61 | 0.061 |
| Achromatopsia (no color) | #616161 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256E39
#256E39
oklch(47.9% 0.11 149.3)
- #7F447B
#7F447B
oklch(47.9% 0.11 329.6)
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 #256E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive Green #556B2F ΔE 0.048
- Camo Green #526525 ΔE 0.048
- Camouflage Green #4B6113 ΔE 0.051
- Pine #2B5D34 ΔE 0.053
- Spruce #0A5F38 ΔE 0.053
- Army Green #4B5D16 ΔE 0.058
- Dark Green #006400 ΔE 0.059
- Jungle Green #048243 ΔE 0.060
Use #256E39 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.