#155A39
Closest named color: Spruce (#0A5F38). oklch(41.6% 0.087 157.7), rgb(21, 90, 57).
Aa
White text reads best on this color (8.22:1).
About this color
#155A39 is a dark, moderately saturated green. In OKLCH its lightness is 42%, its chroma 0.087 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.017 away. White text reads best on it, at 8.22:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.55:1 |
| White text | 8.22:1 |
Values
| HEX | #155A39 |
| RGB | rgb(21, 90, 57) |
| HSL | hsl(151, 62%, 22%) |
| OKLCH | oklch(41.6% 0.087 157.7) |
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 #155A39 | 8.22:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #155A39 | 2.55:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #155A39 text on white | 8.22:1 | AAA | Lc 88.1 | Fine for body text |
| #155A39 text on black | 2.55:1 | Fails | Lc -14.1 | 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
#CBDFD2
oklch(88.5% 0.028 157.3)
-
Step 300
300
#A6CBB4
oklch(80.9% 0.051 157.8)
-
Step 400
400
#74B08D
oklch(70.6% 0.081 157.9)
-
Step 500
500
#4C9C71
oklch(63% 0.103 158)
-
Step 600
600
#298759
oklch(55.7% 0.113 157.7)
-
Step 700
700
#197249
oklch(49.1% 0.105 158)
-
Step 800
800 (this color)
#155A39
oklch(41.6% 0.087 157.7)
-
Step 900
900
#1D4C33
oklch(37.6% 0.067 157.5)
-
Step 950
950
#122D1E
oklch(27.1% 0.044 157.4)
#155A39 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) | #595237 | 0.080 |
| Deuteranopia (no green cones) | #514C3B | 0.079 |
| Tritanopia (no blue cones) | #005951 | 0.039 |
| Achromatopsia (no color) | #4F4F4F | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155A39
#155A39
oklch(41.6% 0.087 157.7)
- #6A385D
#6A385D
oklch(41.7% 0.087 337.6)
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 #155A39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.017
- Pine #2B5D34 ΔE 0.022
- Dark Blue Green #005249 ΔE 0.044
- Navy Green #35530A ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.050
- Deep Green #02590F ΔE 0.051
- Forest #0B5509 ΔE 0.053
- Deep Teal #00555A ΔE 0.061
Use #155A39 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.