#155C40
Closest named color: Spruce (#0A5F38). oklch(42.4% 0.083 162.1), rgb(21, 92, 64).
Aa
White text reads best on this color (7.96:1).
About this color
#155C40 is a dark, moderately saturated green. In OKLCH its lightness is 42%, its chroma 0.083 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.019 away. White text reads best on it, at 7.96:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.63:1 |
| White text | 7.96:1 |
Values
| HEX | #155C40 |
| RGB | rgb(21, 92, 64) |
| HSL | hsl(156, 63%, 22%) |
| OKLCH | oklch(42.4% 0.083 162.1) |
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 #155C40 | 7.96:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #155C40 | 2.63:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #155C40 text on white | 7.96:1 | AAA | Lc 87.3 | Fine for body text |
| #155C40 text on black | 2.63:1 | Fails | Lc -14.8 | 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
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CADFD4
oklch(88.5% 0.027 163.1)
-
Step 300
300
#A5CBB7
oklch(80.9% 0.049 162.1)
-
Step 400
400
#73B092
oklch(70.7% 0.077 162.2)
-
Step 500
500
#4A9C77
oklch(63.1% 0.099 162.1)
-
Step 600
600
#258760
oklch(55.7% 0.108 162.1)
-
Step 700
700
#15724F
oklch(49.1% 0.1 162.1)
-
Step 800
800 (this color)
#155C40
oklch(42.4% 0.083 162.1)
-
Step 900
900
#1B4C37
oklch(37.6% 0.065 162.4)
-
Step 950
950
#112D20
oklch(27.1% 0.042 161.5)
#155C40 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) | #5A553E | 0.079 |
| Deuteranopia (no green cones) | #514E42 | 0.078 |
| Tritanopia (no blue cones) | #005C54 | 0.032 |
| Achromatopsia (no color) | #515151 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155C40
#155C40
oklch(42.4% 0.083 162.1)
- #6D3B5B
#6D3B5B
oklch(42.5% 0.083 342.2)
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 #155C40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.019
- Pine #2B5D34 ΔE 0.023
- Dark Green Blue #1F6357 ΔE 0.040
- Dark Blue Green #005249 ΔE 0.043
- Deep Teal #00555A ΔE 0.055
- Navy Green #35530A ΔE 0.058
- Dark Slate Gray #2F4F4F ΔE 0.060
- Deep Green #02590F ΔE 0.060
Use #155C40 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.