#155F31
Closest named color: Spruce (#0A5F38). oklch(42.9% 0.103 151.4), rgb(21, 95, 49).
Aa
White text reads best on this color (7.74:1).
About this color
#155F31 is a dark, moderately saturated green. In OKLCH its lightness is 43%, its chroma 0.103 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.010 away. White text reads best on it, at 7.74:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.71:1 |
| White text | 7.74:1 |
Values
| HEX | #155F31 |
| RGB | rgb(21, 95, 49) |
| HSL | hsl(143, 64%, 23%) |
| OKLCH | oklch(42.9% 0.103 151.4) |
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 #155F31 | 7.74:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #155F31 | 2.71:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #155F31 text on white | 7.74:1 | AAA | Lc 86.5 | Fine for body text |
| #155F31 text on black | 2.71:1 | Fails | Lc -15.6 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE4
oklch(93.5% 0.017 151.1)
-
Step 200
200
#CAE0CE
oklch(88.5% 0.034 150.8)
-
Step 300
300
#A5CCAD
oklch(80.8% 0.06 151)
-
Step 400
400
#72B282
oklch(70.7% 0.096 151.2)
-
Step 500
500
#489E62
oklch(63% 0.123 151.2)
-
Step 600
600
#228949
oklch(55.7% 0.134 151.4)
-
Step 700
700
#11743A
oklch(49.2% 0.125 151.3)
-
Step 800
800 (this color)
#155F31
oklch(42.9% 0.103 151.4)
-
Step 900
900
#1A4D2B
oklch(37.6% 0.08 151.5)
-
Step 950
950
#112D19
oklch(26.9% 0.051 151)
#155F31 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) | #5F562D | 0.086 |
| Deuteranopia (no green cones) | #575034 | 0.086 |
| Tritanopia (no blue cones) | #005D54 | 0.056 |
| Achromatopsia (no color) | #535353 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155F31
#155F31
oklch(42.9% 0.103 151.4)
- #6F3869
#6F3869
oklch(43% 0.103 331.4)
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 #155F31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.010
- Pine #2B5D34 ΔE 0.018
- Deep Green #02590F ΔE 0.040
- Navy Green #35530A ΔE 0.045
- Forest #0B5509 ΔE 0.047
- Dark Green #006400 ΔE 0.050
- Army Green #4B5D16 ΔE 0.053
- Camouflage Green #4B6113 ΔE 0.056
Use #155F31 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.