#151B09
Closest named color: Rich Black (#0D1B2A). oklch(21% 0.034 124.4), rgb(21, 27, 9).
Aa
White text reads best on this color (17.60:1).
About this color
#151B09 is a very dark, muted brown. In OKLCH its lightness is 21%, its chroma 0.034 and its hue 124°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.062 away. White text reads best on it, at 17.60:1.
| Hue family | Browns |
| Lightness | very dark (21%) |
| Chroma | muted (0.034) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.60:1 |
Values
| HEX | #151B09 |
| RGB | rgb(21, 27, 9) |
| HSL | hsl(80, 50%, 7%) |
| OKLCH | oklch(21% 0.034 124.4) |
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 #151B09 | 17.60:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #151B09 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #151B09 text on white | 17.60:1 | AAA | Lc 104.4 | Preferred for body text |
| #151B09 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
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E8EBE3
oklch(93.6% 0.011 123.5)
-
Step 200
200
#D6DCCC
oklch(88.5% 0.022 123.7)
-
Step 300
300
#BBC5AA
oklch(80.8% 0.039 123.8)
-
Step 400
400
#98A87C
oklch(70.7% 0.064 124.2)
-
Step 500
500
#7F925A
oklch(63.1% 0.082 124)
-
Step 600
600
#687C40
oklch(55.6% 0.088 124.3)
-
Step 700
700
#576932
oklch(49.2% 0.082 124.3)
-
Step 800
800
#47552A
oklch(42.6% 0.067 124)
-
Step 900
900
#3B4626
oklch(37.5% 0.053 124.4)
-
Step 950
950 (this color)
#151B09
oklch(21% 0.034 124.4)
#151B09 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) | #1D1908 | 0.016 |
| Deuteranopia (no green cones) | #1C190A | 0.015 |
| Tritanopia (no blue cones) | #161917 | 0.029 |
| Achromatopsia (no color) | #191919 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151B09
#151B09
oklch(21% 0.034 124.4)
- #1C1425
#1C1425
oklch(21% 0.035 305.2)
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 #151B09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.062
- Dark Brown #341C02 ΔE 0.064
- Rich Navy #001219 ΔE 0.064
- Jet #212529 ΔE 0.065
- Almost Black #070D0D ΔE 0.066
- Dark Forest Green #002D04 ΔE 0.071
- Dark #1B2431 ΔE 0.074
- Very Dark Green #062E03 ΔE 0.074
Use #151B09 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.