#155B39
Closest named color: Spruce (#0A5F38). oklch(41.9% 0.089 157.3), rgb(21, 91, 57).
Aa
White text reads best on this color (8.11:1).
About this color
#155B39 is a dark, moderately saturated green. In OKLCH its lightness is 42%, its chroma 0.089 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.014 away. White text reads best on it, at 8.11:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.58:1 |
| White text | 8.11:1 |
Values
| HEX | #155B39 |
| RGB | rgb(21, 91, 57) |
| HSL | hsl(151, 63%, 22%) |
| OKLCH | oklch(41.9% 0.089 157.3) |
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 #155B39 | 8.11:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #155B39 | 2.58:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #155B39 text on white | 8.11:1 | AAA | Lc 87.8 | Fine for body text |
| #155B39 text on black | 2.58:1 | Fails | Lc -14.4 | 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
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CADFD2
oklch(88.4% 0.029 158.6)
-
Step 300
300
#A6CBB4
oklch(80.9% 0.051 157.8)
-
Step 400
400
#74B18C
oklch(70.8% 0.084 156.9)
-
Step 500
500
#4B9D70
oklch(63.2% 0.106 157.3)
-
Step 600
600
#278758
oklch(55.6% 0.115 157.5)
-
Step 700
700
#187248
oklch(49% 0.106 157.5)
-
Step 800
800 (this color)
#155B39
oklch(41.9% 0.089 157.3)
-
Step 900
900
#1C4C33
oklch(37.6% 0.068 157.8)
-
Step 950
950
#122D1E
oklch(27.1% 0.044 157.4)
#155B39 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) | #5A5337 | 0.081 |
| Deuteranopia (no green cones) | #524D3B | 0.080 |
| Tritanopia (no blue cones) | #005A52 | 0.041 |
| Achromatopsia (no color) | #505050 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155B39
#155B39
oklch(41.9% 0.089 157.3)
- #6B385E
#6B385E
oklch(41.9% 0.089 337.4)
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 #155B39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.014
- Pine #2B5D34 ΔE 0.019
- Dark Blue Green #005249 ΔE 0.047
- Navy Green #35530A ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.049
- Deep Green #02590F ΔE 0.050
- Forest #0B5509 ΔE 0.053
- Army Green #4B5D16 ΔE 0.063
Use #155B39 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.