#155537
Closest named color: Spruce (#0A5F38). oklch(40.1% 0.082 158.5), rgb(21, 85, 55).
Aa
White text reads best on this color (8.79:1).
About this color
#155537 is a dark, moderately saturated green. In OKLCH its lightness is 40%, its chroma 0.082 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.033 away. White text reads best on it, at 8.79:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #155537 |
| RGB | rgb(21, 85, 55) |
| HSL | hsl(152, 60%, 21%) |
| OKLCH | oklch(40.1% 0.082 158.5) |
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 #155537 | 8.79:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #155537 | 2.38:1 | Fails | Lc 14.2 | Not readable |
| #155537 text on white | 8.79:1 | AAA | Lc 89.8 | Fine for body text |
| #155537 text on black | 2.38:1 | Fails | Lc -12.5 | 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 900.
-
Step 50
50
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E1EEE5
oklch(93.7% 0.018 155.8)
-
Step 200
200
#C7E0D1
oklch(88.4% 0.033 159.3)
-
Step 300
300
#A0CDB2
oklch(80.9% 0.061 158.4)
-
Step 400
400
#68B38A
oklch(70.6% 0.097 158.7)
-
Step 500
500
#34A06C
oklch(63.1% 0.126 158.3)
-
Step 600
600
#008956
oklch(55.5% 0.129 158.6)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900 (this color)
#155537
oklch(40.1% 0.082 158.5)
-
Step 950
950
#0B2E1D
oklch(27% 0.051 158.7)
#155537 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) | #544E35 | 0.075 |
| Deuteranopia (no green cones) | #4C4839 | 0.074 |
| Tritanopia (no blue cones) | #00544D | 0.037 |
| Achromatopsia (no color) | #4A4A4A | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155537
#155537
oklch(40.1% 0.082 158.5)
- #643557
#643557
oklch(40.1% 0.082 338.3)
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 #155537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.033
- Dark Blue Green #005249 ΔE 0.034
- Pine #2B5D34 ΔE 0.035
- Navy Green #35530A ΔE 0.049
- Evergreen #05472A ΔE 0.049
- Pine Green #0A481E ΔE 0.051
- Forest #0B5509 ΔE 0.053
- Deep Green #02590F ΔE 0.054
Use #155537 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.