#255B40
Closest named color: Pine (#2B5D34). oklch(42.6% 0.074 159.1), rgb(37, 91, 64).
Aa
White text reads best on this color (7.92:1).
About this color
#255B40 is a dark, moderately saturated green. In OKLCH its lightness is 43%, its chroma 0.074 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pine (#2B5D34), ΔE 0.021 away. White text reads best on it, at 7.92:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.074) |
| Temperature | in between |
| Nearest name | Pine (#2B5D34) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #255B40 |
| RGB | rgb(37, 91, 64) |
| HSL | hsl(150, 42%, 25%) |
| OKLCH | oklch(42.6% 0.074 159.1) |
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 #255B40 | 7.92:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #255B40 | 2.64:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #255B40 text on white | 7.92:1 | AAA | Lc 87.3 | Fine for body text |
| #255B40 text on black | 2.64:1 | Fails | Lc -14.8 | Not readable |
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 800.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3ECE7
oklch(93.5% 0.012 162)
-
Step 200
200
#CDDED3
oklch(88.5% 0.024 157.5)
-
Step 300
300
#AACAB7
oklch(81% 0.043 159.2)
-
Step 400
400
#7BAE91
oklch(70.6% 0.069 159.1)
-
Step 500
500
#579A76
oklch(63.1% 0.088 159)
-
Step 600
600
#39845F
oklch(55.5% 0.095 159.5)
-
Step 700
700
#2B704E
oklch(49.1% 0.089 158.9)
-
Step 800
800 (this color)
#255B40
oklch(42.6% 0.074 159.1)
-
Step 900
900
#244B36
oklch(37.7% 0.058 158.4)
-
Step 950
950
#162C20
oklch(27% 0.036 158.9)
#255B40 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) | #5A543E | 0.069 |
| Deuteranopia (no green cones) | #524F42 | 0.067 |
| Tritanopia (no blue cones) | #125B54 | 0.033 |
| Achromatopsia (no color) | #515151 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255B40
#255B40
oklch(42.6% 0.074 159.1)
- #693E5C
#693E5C
oklch(42.6% 0.074 339)
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 #255B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pine #2B5D34 ΔE 0.021
- Spruce #0A5F38 ΔE 0.026
- Dark Green Blue #1F6357 ΔE 0.037
- Dark Blue Green #005249 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.054
- Deep Teal #00555A ΔE 0.055
- Navy Green #35530A ΔE 0.057
- Army Green #4B5D16 ΔE 0.061
Use #255B40 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.