#031B10
Closest named color: Rich Navy (#001219). oklch(19.9% 0.039 161.3), rgb(3, 27, 16).
Aa
White text reads best on this color (17.97:1).
About this color
#031B10 is a very dark, muted green. In OKLCH its lightness is 20%, its chroma 0.039 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.047 away. White text reads best on it, at 17.97:1.
| Hue family | Greens |
| Lightness | very dark (20%) |
| Chroma | muted (0.039) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.16:1 |
| White text | 17.97:1 |
Values
| HEX | #031B10 |
| RGB | rgb(3, 27, 16) |
| HSL | hsl(153, 80%, 6%) |
| OKLCH | oklch(19.9% 0.039 161.3) |
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 #031B10 | 17.97:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #031B10 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #031B10 text on white | 17.97:1 | AAA | Lc 104.6 | Preferred for body text |
| #031B10 text on black | 1.16:1 | 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
#E3EDE7
oklch(93.7% 0.013 159.9)
-
Step 200
200
#CBDFD4
oklch(88.6% 0.026 161.9)
-
Step 300
300
#A7CAB7
oklch(80.8% 0.046 161.5)
-
Step 400
400
#77AF92
oklch(70.7% 0.073 161.2)
-
Step 500
500
#509B77
oklch(63.1% 0.094 161.2)
-
Step 600
600
#2F8560
oklch(55.5% 0.101 161.6)
-
Step 700
700
#20714F
oklch(49.1% 0.095 161.2)
-
Step 800
800
#1E5C41
oklch(42.7% 0.078 161.3)
-
Step 900
900
#1F4C37
oklch(37.8% 0.062 161)
-
Step 950
950 (this color)
#031B10
oklch(19.9% 0.039 161.3)
#031B10 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) | #1A180F | 0.036 |
| Deuteranopia (no green cones) | #171611 | 0.035 |
| Tritanopia (no blue cones) | #001B18 | 0.016 |
| Achromatopsia (no color) | #171717 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031B10
#031B10
oklch(19.9% 0.039 161.3)
- #210E1B
#210E1B
oklch(19.8% 0.039 340.1)
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 #031B10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.047
- Almost Black #070D0D ΔE 0.056
- Rich Black #0D1B2A ΔE 0.056
- Jet #212529 ΔE 0.075
- Dark Forest Green #002D04 ΔE 0.076
- Dark #1B2431 ΔE 0.078
- Very Dark Green #062E03 ΔE 0.081
- Dark Brown #341C02 ΔE 0.089
Use #031B10 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.