#151B03
Closest named color: Dark Brown (#341C02). oklch(20.9% 0.044 121.4), rgb(21, 27, 3).
Aa
White text reads best on this color (17.64:1).
About this color
#151B03 is a very dark, muted brown. In OKLCH its lightness is 21%, its chroma 0.044 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.065 away. White text reads best on it, at 17.64:1.
| Hue family | Browns |
| Lightness | very dark (21%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.18:1 |
| White text | 17.64:1 |
Values
| HEX | #151B03 |
| RGB | rgb(21, 27, 3) |
| HSL | hsl(75, 80%, 6%) |
| OKLCH | oklch(20.9% 0.044 121.4) |
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 #151B03 | 17.64:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #151B03 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #151B03 text on white | 17.64:1 | AAA | Lc 104.4 | Preferred for body text |
| #151B03 text on black | 1.18:1 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E8ECE1
oklch(93.7% 0.015 123)
-
Step 200
200
#D6DCC8
oklch(88.4% 0.028 120.6)
-
Step 300
300
#BBC6A1
oklch(80.8% 0.052 121)
-
Step 400
400
#98A96E
oklch(70.7% 0.083 121.6)
-
Step 500
500
#7F9346
oklch(63% 0.106 121.5)
-
Step 600
600
#697D25
oklch(55.6% 0.115 121.3)
-
Step 700
700
#576917
oklch(48.9% 0.106 121.5)
-
Step 800
800
#485616
oklch(42.7% 0.089 121)
-
Step 900
900
#3C471A
oklch(37.7% 0.068 121.3)
-
Step 950
950 (this color)
#151B03
oklch(20.9% 0.044 121.4)
#151B03 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) | #1D1901 | 0.016 |
| Deuteranopia (no green cones) | #1D1904 | 0.017 |
| Tritanopia (no blue cones) | #171916 | 0.037 |
| Achromatopsia (no color) | #191919 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151B03
#151B03
oklch(20.9% 0.044 121.4)
- #1C1329
#1C1329
oklch(21% 0.044 301.6)
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 #151B03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.065
- Dark Forest Green #002D04 ΔE 0.067
- Very Dark Green #062E03 ΔE 0.070
- Almost Black #070D0D ΔE 0.071
- Rich Navy #001219 ΔE 0.071
- Rich Black #0D1B2A ΔE 0.072
- Jet #212529 ΔE 0.073
- Dark #1B2431 ΔE 0.083
Use #151B03 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.