#191B03
Closest named color: Dark Brown (#341C02). oklch(21.3% 0.042 113.7), rgb(25, 27, 3).
Aa
White text reads best on this color (17.50:1).
About this color
#191B03 is a very dark, muted brown. In OKLCH its lightness is 21%, its chroma 0.042 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.058 away. White text reads best on it, at 17.50:1.
| Hue family | Browns |
| Lightness | very dark (21%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.19:1 |
| White text | 17.50:1 |
Values
| HEX | #191B03 |
| RGB | rgb(25, 27, 3) |
| HSL | hsl(65, 80%, 6%) |
| OKLCH | oklch(21.3% 0.042 113.7) |
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 #191B03 | 17.50:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #191B03 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #191B03 text on white | 17.50:1 | AAA | Lc 104.3 | Preferred for body text |
| #191B03 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E9EBE0
oklch(93.6% 0.015 115)
-
Step 200
200
#D8DBC7
oklch(88.4% 0.027 113.9)
-
Step 300
300
#C0C5A0
oklch(81% 0.05 113.8)
-
Step 400
400
#A0A66C
oklch(70.6% 0.079 113.2)
-
Step 500
500
#899043
oklch(63.1% 0.101 113.6)
-
Step 600
600
#737A21
oklch(55.6% 0.11 113.9)
-
Step 700
700
#616612
oklch(49% 0.102 113.1)
-
Step 800
800
#4F5413
oklch(42.8% 0.085 113.8)
-
Step 900
900
#414518
oklch(37.6% 0.066 113.8)
-
Step 950
950 (this color)
#191B03
oklch(21.3% 0.042 113.7)
#191B03 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) | #1E1901 | 0.011 |
| Deuteranopia (no green cones) | #1E1A04 | 0.011 |
| Tritanopia (no blue cones) | #1B1916 | 0.037 |
| Achromatopsia (no color) | #191919 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191B03
#191B03
oklch(21.3% 0.042 113.7)
- #1A152A
#1A152A
oklch(21.3% 0.041 293.6)
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 #191B03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.058
- Dark Forest Green #002D04 ΔE 0.068
- Jet #212529 ΔE 0.069
- Very Dark Green #062E03 ΔE 0.071
- Rich Black #0D1B2A ΔE 0.072
- Almost Black #070D0D ΔE 0.074
- Rich Navy #001219 ΔE 0.075
- Dark #1B2431 ΔE 0.080
Use #191B03 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.