#031B09
Closest named color: Rich Navy (#001219). oklch(19.7% 0.047 149.9), rgb(3, 27, 9).
Aa
White text reads best on this color (18.03:1).
About this color
#031B09 is a very dark, muted green. In OKLCH its lightness is 20%, its chroma 0.047 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.056 away. White text reads best on it, at 18.03:1.
| Hue family | Greens |
| Lightness | very dark (20%) |
| Chroma | muted (0.047) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.16:1 |
| White text | 18.03:1 |
Values
| HEX | #031B09 |
| RGB | rgb(3, 27, 9) |
| HSL | hsl(135, 80%, 6%) |
| OKLCH | oklch(19.7% 0.047 149.9) |
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 #031B09 | 18.03:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #031B09 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #031B09 text on white | 18.03:1 | AAA | Lc 104.6 | Preferred for body text |
| #031B09 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE4
oklch(93.6% 0.016 148.4)
-
Step 200
200
#CBDFCE
oklch(88.4% 0.031 149.8)
-
Step 300
300
#A8CBAE
oklch(80.9% 0.055 150)
-
Step 400
400
#77B183
oklch(70.8% 0.09 150.1)
-
Step 500
500
#519D63
oklch(63.2% 0.115 149.7)
-
Step 600
600
#31874A
oklch(55.6% 0.124 149.9)
-
Step 700
700
#22723B
oklch(49% 0.116 150)
-
Step 800
800
#1F5D31
oklch(42.6% 0.096 149.9)
-
Step 900
900
#204C2B
oklch(37.6% 0.074 149.7)
-
Step 950
950 (this color)
#031B09
oklch(19.7% 0.047 149.9)
#031B09 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) | #1B1808 | 0.038 |
| Deuteranopia (no green cones) | #18150A | 0.039 |
| Tritanopia (no blue cones) | #001A17 | 0.027 |
| Achromatopsia (no color) | #161616 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031B09
#031B09
oklch(19.7% 0.047 149.9)
- #210C1F
#210C1F
oklch(19.6% 0.048 330.9)
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 #031B09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.056
- Almost Black #070D0D ΔE 0.061
- Rich Black #0D1B2A ΔE 0.068
- Dark Forest Green #002D04 ΔE 0.071
- Very Dark Green #062E03 ΔE 0.076
- Jet #212529 ΔE 0.082
- Dark #1B2431 ΔE 0.087
- Dark Brown #341C02 ΔE 0.089
Use #031B09 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.