#151B0B
Closest named color: Rich Black (#0D1B2A). oklch(21.1% 0.031 125.7), rgb(21, 27, 11).
Aa
White text reads best on this color (17.59:1).
About this color
#151B0B is a very dark, muted green. In OKLCH its lightness is 21%, its chroma 0.031 and its hue 126°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.059 away. White text reads best on it, at 17.59:1.
| Hue family | Greens |
| Lightness | very dark (21%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.59:1 |
Values
| HEX | #151B0B |
| RGB | rgb(21, 27, 11) |
| HSL | hsl(83, 42%, 7%) |
| OKLCH | oklch(21.1% 0.031 125.7) |
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 #151B0B | 17.59:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #151B0B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #151B0B text on white | 17.59:1 | AAA | Lc 104.4 | Preferred for body text |
| #151B0B text on black | 1.19:1 | 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E8EBE4
oklch(93.6% 0.01 125.7)
-
Step 200
200
#D6DCCE
oklch(88.6% 0.02 125.8)
-
Step 300
300
#BBC5AC
oklch(80.9% 0.036 125)
-
Step 400
400
#98A880
oklch(70.8% 0.059 125.6)
-
Step 500
500
#7E9260
oklch(63.1% 0.075 126.2)
-
Step 600
600
#687C46
oklch(55.7% 0.081 125.5)
-
Step 700
700
#566838
oklch(49% 0.074 125.8)
-
Step 800
800
#47552E
oklch(42.7% 0.062 125.1)
-
Step 900
900
#3B4629
oklch(37.6% 0.049 125.6)
-
Step 950
950 (this color)
#151B0B
oklch(21.1% 0.031 125.7)
#151B0B 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) | #1D190A | 0.016 |
| Deuteranopia (no green cones) | #1C190C | 0.015 |
| Tritanopia (no blue cones) | #161A17 | 0.024 |
| Achromatopsia (no color) | #191919 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151B0B
#151B0B
oklch(21.1% 0.031 125.7)
- #1C1524
#1C1524
oklch(21.2% 0.031 305.3)
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 #151B0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.059
- Rich Navy #001219 ΔE 0.062
- Jet #212529 ΔE 0.063
- Dark Brown #341C02 ΔE 0.064
- Almost Black #070D0D ΔE 0.065
- Dark #1B2431 ΔE 0.071
- Dark Forest Green #002D04 ΔE 0.072
- Very Dark Green #062E03 ΔE 0.075
Use #151B0B 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.