#031F12
Closest named color: Rich Black (#0D1B2A). oklch(21.3% 0.043 160.1), rgb(3, 31, 18).
Aa
White text reads best on this color (17.37:1).
About this color
#031F12 is a very dark, muted green. In OKLCH its lightness is 21%, its chroma 0.043 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.057 away. White text reads best on it, at 17.37:1.
| Hue family | Greens |
| Lightness | very dark (21%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.37:1 |
Values
| HEX | #031F12 |
| RGB | rgb(3, 31, 18) |
| HSL | hsl(152, 82%, 7%) |
| OKLCH | oklch(21.3% 0.043 160.1) |
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 #031F12 | 17.37:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #031F12 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #031F12 text on white | 17.37:1 | AAA | Lc 104.1 | Preferred for body text |
| #031F12 text on black | 1.20:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CADFD3
oklch(88.5% 0.028 160.8)
-
Step 300
300
#A5CBB5
oklch(80.8% 0.051 159.6)
-
Step 400
400
#71B18F
oklch(70.7% 0.083 160.1)
-
Step 500
500
#479D73
oklch(63.1% 0.106 159.9)
-
Step 600
600
#20875C
oklch(55.5% 0.114 160.4)
-
Step 700
700
#0F734B
oklch(49.2% 0.107 159.7)
-
Step 800
800
#135D3E
oklch(42.6% 0.087 160.3)
-
Step 900
900
#194D35
oklch(37.8% 0.069 160.1)
-
Step 950
950 (this color)
#031F12
oklch(21.3% 0.043 160.1)
#031F12 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) | #1E1C11 | 0.040 |
| Deuteranopia (no green cones) | #1B1913 | 0.041 |
| Tritanopia (no blue cones) | #001F1C | 0.019 |
| Achromatopsia (no color) | #1A1A1A | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031F12
#031F12
oklch(21.3% 0.043 160.1)
- #26101F
#26101F
oklch(21.2% 0.044 340.4)
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 #031F12, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.057
- Rich Navy #001219 ΔE 0.060
- Dark Forest Green #002D04 ΔE 0.062
- Jet #212529 ΔE 0.066
- Very Dark Green #062E03 ΔE 0.066
- Dark #1B2431 ΔE 0.070
- Almost Black #070D0D ΔE 0.071
- Dark Brown #341C02 ΔE 0.083
Use #031F12 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.