#155E37
Closest named color: Spruce (#0A5F38). oklch(42.8% 0.095 154.9), rgb(21, 94, 55).
Aa
White text reads best on this color (7.81:1).
About this color
#155E37 is a dark, moderately saturated green. In OKLCH its lightness is 43%, its chroma 0.095 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.005 away. White text reads best on it, at 7.81:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.68:1 |
| White text | 7.81:1 |
Values
| HEX | #155E37 |
| RGB | rgb(21, 94, 55) |
| HSL | hsl(148, 63%, 23%) |
| OKLCH | oklch(42.8% 0.095 154.9) |
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 #155E37 | 7.81:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #155E37 | 2.68:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #155E37 text on white | 7.81:1 | AAA | Lc 86.8 | Fine for body text |
| #155E37 text on black | 2.68:1 | Fails | Lc -15.3 | 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
#CAE0D0
oklch(88.6% 0.032 154.1)
-
Step 300
300
#A5CCB1
oklch(80.9% 0.056 154.8)
-
Step 400
400
#72B188
oklch(70.6% 0.089 154.9)
-
Step 500
500
#489E6A
oklch(63.2% 0.115 154.7)
-
Step 600
600
#238852
oklch(55.6% 0.124 154.9)
-
Step 700
700
#127342
oklch(49.1% 0.115 154.8)
-
Step 800
800 (this color)
#155E37
oklch(42.8% 0.095 154.9)
-
Step 900
900
#1A4D30
oklch(37.7% 0.074 155.3)
-
Step 950
950
#112D1C
oklch(27% 0.047 154.9)
#155E37 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) | #5E5634 | 0.085 |
| Deuteranopia (no green cones) | #554F3A | 0.084 |
| Tritanopia (no blue cones) | #005D54 | 0.046 |
| Achromatopsia (no color) | #525252 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155E37
#155E37
oklch(42.8% 0.095 154.9)
- #6E3964
#6E3964
oklch(42.7% 0.095 334.6)
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 #155E37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.005
- Pine #2B5D34 ΔE 0.015
- Deep Green #02590F ΔE 0.047
- Navy Green #35530A ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.050
- Forest #0B5509 ΔE 0.052
- Army Green #4B5D16 ΔE 0.057
- Dark Blue Green #005249 ΔE 0.057
Use #155E37 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.