#155739
Closest named color: Spruce (#0A5F38). oklch(40.8% 0.083 159.1), rgb(21, 87, 57).
Aa
White text reads best on this color (8.55:1).
About this color
#155739 is a dark, moderately saturated green. In OKLCH its lightness is 41%, its chroma 0.083 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.027 away. White text reads best on it, at 8.55:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #155739 |
| RGB | rgb(21, 87, 57) |
| HSL | hsl(153, 61%, 21%) |
| OKLCH | oklch(40.8% 0.083 159.1) |
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 #155739 | 8.55:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #155739 | 2.45:1 | Fails | Lc 14.9 | Not readable |
| #155739 text on white | 8.55:1 | AAA | Lc 89.1 | Fine for body text |
| #155739 text on black | 2.45:1 | Fails | Lc -13.1 | 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
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A7CBB5
oklch(81% 0.049 158.3)
-
Step 400
400
#76B08F
oklch(70.8% 0.078 158.7)
-
Step 500
500
#4E9C74
oklch(63.2% 0.099 159.3)
-
Step 600
600
#2D865C
oklch(55.6% 0.107 159.1)
-
Step 700
700
#1E724C
oklch(49.2% 0.1 159.1)
-
Step 800
800 (this color)
#155739
oklch(40.8% 0.083 159.1)
-
Step 900
900
#1E4C35
oklch(37.7% 0.065 159.2)
-
Step 950
950
#132D1F
oklch(27.2% 0.042 158.4)
#155739 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) | #565037 | 0.077 |
| Deuteranopia (no green cones) | #4E4A3B | 0.075 |
| Tritanopia (no blue cones) | #00564F | 0.037 |
| Achromatopsia (no color) | #4C4C4C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155739
#155739
oklch(40.8% 0.083 159.1)
- #663758
#663758
oklch(40.8% 0.081 339.2)
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 #155739, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.027
- Pine #2B5D34 ΔE 0.030
- Dark Blue Green #005249 ΔE 0.036
- Navy Green #35530A ΔE 0.050
- Deep Green #02590F ΔE 0.054
- Forest #0B5509 ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.055
- Evergreen #05472A ΔE 0.056
Use #155739 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.