#175A31
Closest named color: Spruce (#0A5F38). oklch(41.5% 0.095 152.3), rgb(23, 90, 49).
Aa
White text reads best on this color (8.25:1).
About this color
#175A31 is a dark, moderately saturated green. In OKLCH its lightness is 42%, its chroma 0.095 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.016 away. White text reads best on it, at 8.25:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.54:1 |
| White text | 8.25:1 |
Values
| HEX | #175A31 |
| RGB | rgb(23, 90, 49) |
| HSL | hsl(143, 59%, 22%) |
| OKLCH | oklch(41.5% 0.095 152.3) |
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 #175A31 | 8.25:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #175A31 | 2.54:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #175A31 text on white | 8.25:1 | AAA | Lc 88.2 | Fine for body text |
| #175A31 text on black | 2.54:1 | Fails | Lc -14.0 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#CBDFCF
oklch(88.4% 0.03 151.5)
-
Step 300
300
#A7CBAF
oklch(80.8% 0.055 151.7)
-
Step 400
400
#75B186
oklch(70.7% 0.089 152.6)
-
Step 500
500
#4E9D67
oklch(63.1% 0.113 152.2)
-
Step 600
600
#2C874E
oklch(55.5% 0.123 152.3)
-
Step 700
700
#1D733F
oklch(49.2% 0.115 152.2)
-
Step 800
800 (this color)
#175A31
oklch(41.5% 0.095 152.3)
-
Step 900
900
#1E4D2E
oklch(37.8% 0.074 152.4)
-
Step 950
950
#132D1B
oklch(27% 0.047 152.1)
#175A31 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) | #5A522E | 0.081 |
| Deuteranopia (no green cones) | #524C34 | 0.080 |
| Tritanopia (no blue cones) | #005950 | 0.049 |
| Achromatopsia (no color) | #4E4E4E | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175A31
#175A31
oklch(41.5% 0.095 152.3)
- #693662
#693662
oklch(41.5% 0.095 332.4)
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 #175A31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.016
- Pine #2B5D34 ΔE 0.020
- Deep Green #02590F ΔE 0.040
- Navy Green #35530A ΔE 0.040
- Forest #0B5509 ΔE 0.043
- Dark Blue Green #005249 ΔE 0.053
- Army Green #4B5D16 ΔE 0.059
- Dark Green Blue #1F6357 ΔE 0.059
Use #175A31 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.