#155C31
Closest named color: Spruce (#0A5F38). oklch(42.1% 0.099 152.1), rgb(21, 92, 49).
Aa
White text reads best on this color (8.05:1).
About this color
#155C31 is a dark, moderately saturated green. In OKLCH its lightness is 42%, its chroma 0.099 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.011 away. White text reads best on it, at 8.05:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.60:1 |
| White text | 8.05:1 |
Values
| HEX | #155C31 |
| RGB | rgb(21, 92, 49) |
| HSL | hsl(144, 63%, 22%) |
| OKLCH | oklch(42.1% 0.099 152.1) |
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 #155C31 | 8.05:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #155C31 | 2.60:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #155C31 text on white | 8.05:1 | AAA | Lc 87.5 | Fine for body text |
| #155C31 text on black | 2.60:1 | Fails | Lc -14.6 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE4
oklch(93.5% 0.017 151.1)
-
Step 200
200
#CAE0CF
oklch(88.6% 0.033 152.4)
-
Step 300
300
#A6CCAF
oklch(81% 0.057 152.1)
-
Step 400
400
#73B184
oklch(70.6% 0.092 152.2)
-
Step 500
500
#4A9E65
oklch(63.2% 0.119 152)
-
Step 600
600
#27884C
oklch(55.6% 0.128 152)
-
Step 700
700
#17733D
oklch(49% 0.119 152.1)
-
Step 800
800 (this color)
#155C31
oklch(42.1% 0.099 152.1)
-
Step 900
900
#1C4D2D
oklch(37.7% 0.076 152.3)
-
Step 950
950
#122D1A
oklch(27% 0.049 151.5)
#155C31 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) | #5C542E | 0.084 |
| Deuteranopia (no green cones) | #544E34 | 0.083 |
| Tritanopia (no blue cones) | #005B52 | 0.052 |
| Achromatopsia (no color) | #505050 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155C31
#155C31
oklch(42.1% 0.099 152.1)
- #6C3765
#6C3765
oklch(42.2% 0.098 332.3)
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 #155C31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.011
- Pine #2B5D34 ΔE 0.018
- Deep Green #02590F ΔE 0.038
- Navy Green #35530A ΔE 0.042
- Forest #0B5509 ΔE 0.043
- Dark Green #006400 ΔE 0.056
- Army Green #4B5D16 ΔE 0.057
- Dark Blue Green #005249 ΔE 0.058
Use #155C31 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.