#1B1603
Closest named color: Dark Brown (#341C02). oklch(20.1% 0.035 95.8), rgb(27, 22, 3).
Aa
White text reads best on this color (18.06:1).
About this color
#1B1603 is a very dark, muted brown. In OKLCH its lightness is 20%, its chroma 0.035 and its hue 96°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.061 away. White text reads best on it, at 18.06:1.
| Hue family | Browns |
| Lightness | very dark (20%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.16:1 |
| White text | 18.06:1 |
Values
| HEX | #1B1603 |
| RGB | rgb(27, 22, 3) |
| HSL | hsl(48, 80%, 6%) |
| OKLCH | oklch(20.1% 0.035 95.8) |
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 #1B1603 | 18.06:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #1B1603 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #1B1603 text on white | 18.06:1 | AAA | Lc 104.7 | Preferred for body text |
| #1B1603 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
#F6F5F1
oklch(97% 0.005 95.1)
-
Step 100
100
#ECEAE1
oklch(93.6% 0.012 96.4)
-
Step 200
200
#DDD9C8
oklch(88.4% 0.023 96)
-
Step 300
300
#C8C1A3
oklch(80.9% 0.041 96.3)
-
Step 400
400
#ADA171
oklch(70.8% 0.067 95.8)
-
Step 500
500
#99894B
oklch(63.1% 0.084 95.3)
-
Step 600
600
#84732C
oklch(55.7% 0.093 95.7)
-
Step 700
700
#6F601E
oklch(49% 0.086 96.1)
-
Step 800
800
#5B4F1B
oklch(42.8% 0.072 96.2)
-
Step 900
900
#4A411D
oklch(37.6% 0.055 95.6)
-
Step 950
950 (this color)
#1B1603
oklch(20.1% 0.035 95.8)
#1B1603 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) | #191502 | 0.006 |
| Deuteranopia (no green cones) | #1B1704 | 0.004 |
| Tritanopia (no blue cones) | #1E1312 | 0.034 |
| Achromatopsia (no color) | #161616 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B1603
#1B1603
oklch(20.1% 0.035 95.8)
- #121526
#121526
oklch(20.2% 0.034 275.3)
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 #1B1603, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.061
- Almost Black #070D0D ΔE 0.062
- Rich Navy #001219 ΔE 0.067
- Very Dark Brown #1D0200 ΔE 0.069
- Rich Black #0D1B2A ΔE 0.071
- Jet #212529 ΔE 0.075
- Dark #1B2431 ΔE 0.084
- Dark Forest Green #002D04 ΔE 0.087
Use #1B1603 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.