#155E39
Closest named color: Spruce (#0A5F38). oklch(42.8% 0.093 156.1), rgb(21, 94, 57).
Aa
White text reads best on this color (7.80:1).
About this color
#155E39 is a dark, moderately saturated green. In OKLCH its lightness is 43%, its chroma 0.093 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.006 away. White text reads best on it, at 7.80:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.69:1 |
| White text | 7.80:1 |
Values
| HEX | #155E39 |
| RGB | rgb(21, 94, 57) |
| HSL | hsl(150, 63%, 23%) |
| OKLCH | oklch(42.8% 0.093 156.1) |
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 #155E39 | 7.80:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #155E39 | 2.69:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #155E39 text on white | 7.80:1 | AAA | Lc 86.7 | Fine for body text |
| #155E39 text on black | 2.69:1 | Fails | Lc -15.4 | 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
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#CADFD1
oklch(88.4% 0.029 156.6)
-
Step 300
300
#A5CCB2
oklch(81% 0.055 155.8)
-
Step 400
400
#72B18A
oklch(70.7% 0.087 156.2)
-
Step 500
500
#489D6D
oklch(63% 0.111 156.4)
-
Step 600
600
#238854
oklch(55.7% 0.122 155.8)
-
Step 700
700
#127345
oklch(49.1% 0.112 156.2)
-
Step 800
800 (this color)
#155E39
oklch(42.8% 0.093 156.1)
-
Step 900
900
#1A4D31
oklch(37.7% 0.073 156.1)
-
Step 950
950
#112D1D
oklch(27% 0.046 156.4)
#155E39 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) | #5D5637 | 0.083 |
| Deuteranopia (no green cones) | #55503B | 0.082 |
| Tritanopia (no blue cones) | #005D55 | 0.045 |
| Achromatopsia (no color) | #525252 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155E39
#155E39
oklch(42.8% 0.093 156.1)
- #6E3A62
#6E3A62
oklch(42.8% 0.092 336.3)
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 #155E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.006
- Pine #2B5D34 ΔE 0.015
- Dark Green Blue #1F6357 ΔE 0.047
- Deep Green #02590F ΔE 0.049
- Navy Green #35530A ΔE 0.051
- Forest #0B5509 ΔE 0.055
- Dark Blue Green #005249 ΔE 0.055
- Army Green #4B5D16 ΔE 0.058
Use #155E39 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.