#31491B
Closest named color: Dark Olive (#373E02). oklch(37.4% 0.077 132.1), rgb(49, 73, 27).
Aa
White text reads best on this color (10.00:1).
About this color
#31491B is a dark, moderately saturated green. In OKLCH its lightness is 37%, its chroma 0.077 and its hue 132°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.035 away. White text reads best on it, at 10.00:1.
| Hue family | Greens |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #31491B |
| RGB | rgb(49, 73, 27) |
| HSL | hsl(91, 46%, 20%) |
| OKLCH | oklch(37.4% 0.077 132.1) |
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 #31491B | 10.00:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #31491B | 2.09:1 | Fails | Lc 10.8 | Not readable |
| #31491B text on white | 10.00:1 | AAA | Lc 93.1 | Preferred for body text |
| #31491B text on black | 2.09:1 | Fails | Lc -9.4 | 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
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E6ECE1
oklch(93.5% 0.016 130.4)
-
Step 200
200
#D1DEC8
oklch(88.5% 0.033 132.3)
-
Step 300
300
#B3C9A3
oklch(80.9% 0.057 132.2)
-
Step 400
400
#8BAD70
oklch(70.7% 0.093 132.1)
-
Step 500
500
#6E984A
oklch(63.1% 0.117 132.2)
-
Step 600
600
#56822A
oklch(55.5% 0.127 132.1)
-
Step 700
700
#466E1C
oklch(49.1% 0.119 132.1)
-
Step 800
800
#3A5A1A
oklch(42.8% 0.099 132.1)
-
Step 900
900 (this color)
#31491B
oklch(37.4% 0.077 132.1)
-
Step 950
950
#1D2B11
oklch(26.9% 0.048 132.2)
#31491B 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) | #4C4416 | 0.043 |
| Deuteranopia (no green cones) | #49421E | 0.044 |
| Tritanopia (no blue cones) | #32463F | 0.058 |
| Achromatopsia (no color) | #424242 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31491B
#31491B
oklch(37.4% 0.077 132.1)
- #4E345E
#4E345E
oklch(37.4% 0.076 311.6)
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 #31491B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.035
- Pine Green #0A481E ΔE 0.036
- Navy Green #35530A ΔE 0.039
- Evergreen #05472A ΔE 0.041
- Forrest Green #154406 ΔE 0.043
- British Racing Green #05480D ΔE 0.044
- Darkgreen #054907 ΔE 0.046
- Bottle Green #044A05 ΔE 0.047
Use #31491B 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.