#255E4A
Closest named color: Dark Green Blue (#1F6357). oklch(43.8% 0.069 167.2), rgb(37, 94, 74).
Aa
White text reads best on this color (7.55:1).
About this color
#255E4A is a dark, muted green. In OKLCH its lightness is 44%, its chroma 0.069 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.021 away. White text reads best on it, at 7.55:1.
| Hue family | Greens |
| Lightness | dark (44%) |
| Chroma | muted (0.069) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.77:1 |
| White text | 7.55:1 |
Values
| HEX | #255E4A |
| RGB | rgb(37, 94, 74) |
| HSL | hsl(159, 44%, 26%) |
| OKLCH | oklch(43.8% 0.069 167.2) |
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 #255E4A | 7.55:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #255E4A | 2.77:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #255E4A text on white | 7.55:1 | AAA | Lc 86.1 | Fine for body text |
| #255E4A text on black | 2.77:1 | Fails | Lc -16.0 | 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 800.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE8
oklch(93.5% 0.011 167.8)
-
Step 200
200
#CCDED6
oklch(88.5% 0.022 167.4)
-
Step 300
300
#A9C9BB
oklch(80.8% 0.04 167.1)
-
Step 400
400
#79AE98
oklch(70.7% 0.065 166.8)
-
Step 500
500
#549A7F
oklch(63.2% 0.083 166.8)
-
Step 600
600
#358468
oklch(55.6% 0.09 166.8)
-
Step 700
700
#267057
oklch(49.2% 0.084 167.1)
-
Step 800
800 (this color)
#255E4A
oklch(43.8% 0.069 167.2)
-
Step 900
900
#224B3C
oklch(37.8% 0.053 167.3)
-
Step 950
950
#152C23
oklch(27.1% 0.034 166.7)
#255E4A 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) | #5C5849 | 0.069 |
| Deuteranopia (no green cones) | #53524B | 0.065 |
| Tritanopia (no blue cones) | #085E58 | 0.025 |
| Achromatopsia (no color) | #545454 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255E4A
#255E4A
oklch(43.8% 0.069 167.2)
- #6E4259
#6E4259
oklch(43.9% 0.069 347.7)
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 #255E4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.021
- Pine #2B5D34 ΔE 0.032
- Spruce #0A5F38 ΔE 0.035
- Dark Blue Green #005249 ΔE 0.048
- Deep Teal #00555A ΔE 0.050
- Petrol #005F6A ΔE 0.052
- Dark Aqua #05696B ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.053
Use #255E4A 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.