#31451B
Closest named color: Dark Olive (#373E02). oklch(36.3% 0.07 130.4), rgb(49, 69, 27).
Aa
White text reads best on this color (10.51:1).
About this color
#31451B is a dark, moderately saturated green. In OKLCH its lightness is 36%, its chroma 0.070 and its hue 130°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.026 away. White text reads best on it, at 10.51:1.
| Hue family | Greens |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.99:1 |
| White text | 10.51:1 |
Values
| HEX | #31451B |
| RGB | rgb(49, 69, 27) |
| HSL | hsl(89, 44%, 19%) |
| OKLCH | oklch(36.3% 0.07 130.4) |
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 #31451B | 10.51:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #31451B | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #31451B text on white | 10.51:1 | AAA | Lc 94.3 | Preferred for body text |
| #31451B text on black | 1.99:1 | Fails | Lc -8.3 | 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
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E6ECE2
oklch(93.6% 0.015 132.5)
-
Step 200
200
#D3DDC9
oklch(88.4% 0.029 128.8)
-
Step 300
300
#B5C8A5
oklch(80.9% 0.052 130.8)
-
Step 400
400
#8FAC74
oklch(70.8% 0.084 130.5)
-
Step 500
500
#73964E
oklch(63% 0.107 130.2)
-
Step 600
600
#5C8131
oklch(55.7% 0.117 130.3)
-
Step 700
700
#4B6D23
oklch(49.2% 0.109 130.6)
-
Step 800
800
#3E591F
oklch(42.9% 0.09 130.5)
-
Step 900
900 (this color)
#31451B
oklch(36.3% 0.07 130.4)
-
Step 950
950
#1F2B13
oklch(27.1% 0.045 130.6)
#31451B 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) | #484017 | 0.038 |
| Deuteranopia (no green cones) | #453F1E | 0.038 |
| Tritanopia (no blue cones) | #32423C | 0.054 |
| Achromatopsia (no color) | #3F3F3F | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31451B
#31451B
oklch(36.3% 0.07 130.4)
- #493359
#493359
oklch(36.3% 0.069 309.9)
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 #31451B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.026
- Pine Green #0A481E ΔE 0.036
- Evergreen #05472A ΔE 0.038
- Forrest Green #154406 ΔE 0.041
- British Racing Green #05480D ΔE 0.046
- Darkgreen #054907 ΔE 0.049
- Hunter Green #0B4008 ΔE 0.051
- Bottle Green #044A05 ΔE 0.051
Use #31451B 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.