#31591D
Closest named color: Navy Green (#35530A). oklch(42% 0.1 136.7), rgb(49, 89, 29).
Aa
White text reads best on this color (8.14:1).
About this color
#31591D is a dark, moderately saturated green. In OKLCH its lightness is 42%, its chroma 0.100 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Navy Green (#35530A), ΔE 0.020 away. White text reads best on it, at 8.14:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Navy Green (#35530A) |
| Black text | 2.57:1 |
| White text | 8.14:1 |
Values
| HEX | #31591D |
| RGB | rgb(49, 89, 29) |
| HSL | hsl(100, 51%, 23%) |
| OKLCH | oklch(42% 0.1 136.7) |
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 #31591D | 8.14:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #31591D | 2.57:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #31591D text on white | 8.14:1 | AAA | Lc 88.0 | Fine for body text |
| #31591D text on black | 2.57:1 | Fails | Lc -14.1 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E5EDE2
oklch(93.7% 0.017 137)
-
Step 200
200
#CFDECA
oklch(88.4% 0.031 137.8)
-
Step 300
300
#AFCAA5
oklch(80.9% 0.059 137.3)
-
Step 400
400
#85AE74
oklch(70.6% 0.093 136.8)
-
Step 500
500
#669A4F
oklch(63.1% 0.119 136.8)
-
Step 600
600
#4C8431
oklch(55.6% 0.13 136.9)
-
Step 700
700
#3D7023
oklch(49.2% 0.122 136.8)
-
Step 800
800 (this color)
#31591D
oklch(42% 0.1 136.7)
-
Step 900
900
#2D4B1F
oklch(37.8% 0.078 136.7)
-
Step 950
950
#1B2C13
oklch(27.1% 0.049 136.4)
#31591D 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) | #5C5116 | 0.064 |
| Deuteranopia (no green cones) | #574E22 | 0.064 |
| Tritanopia (no blue cones) | #2F564C | 0.070 |
| Achromatopsia (no color) | #4F4F4F | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31591D
#31591D
oklch(42% 0.1 136.7)
- #623A71
#623A71
oklch(42% 0.099 316.3)
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 #31591D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Green #35530A ΔE 0.020
- Pine #2B5D34 ΔE 0.026
- Spruce #0A5F38 ΔE 0.035
- Deep Green #02590F ΔE 0.037
- Army Green #4B5D16 ΔE 0.037
- Forest #0B5509 ΔE 0.039
- Camouflage Green #4B6113 ΔE 0.045
- Dark Green #006400 ΔE 0.052
Use #31591D 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.