#1B0404
Closest named color: Very Dark Brown (#1D0200). oklch(15.4% 0.044 23.8), rgb(27, 4, 4).
Aa
White text reads best on this color (19.70:1).
About this color
#1B0404 is a very dark, muted red. In OKLCH its lightness is 15%, its chroma 0.044 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.014 away. White text reads best on it, at 19.70:1.
| Hue family | Reds |
| Lightness | very dark (15%) |
| Chroma | muted (0.044) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.06:1 |
| White text | 19.70:1 |
Values
| HEX | #1B0404 |
| RGB | rgb(27, 4, 4) |
| HSL | hsl(0, 74%, 6%) |
| OKLCH | oklch(15.4% 0.044 23.8) |
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 #1B0404 | 19.70:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #1B0404 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #1B0404 text on white | 19.70:1 | AAA | Lc 105.6 | Preferred for body text |
| #1B0404 text on black | 1.06:1 | 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
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F4E6E5
oklch(93.6% 0.015 22.4)
-
Step 200
200
#ECD2D0
oklch(88.5% 0.029 23)
-
Step 300
300
#E0B4B1
oklch(80.8% 0.051 22.8)
-
Step 400
400
#CF8C88
oklch(70.6% 0.083 23.1)
-
Step 500
500
#C16E6A
oklch(63% 0.106 23.4)
-
Step 600
600
#AD5552
oklch(55.6% 0.116 23.5)
-
Step 700
700
#944542
oklch(49.1% 0.107 24)
-
Step 800
800
#783937
oklch(42.6% 0.089 23.4)
-
Step 900
900
#61322F
oklch(37.7% 0.068 24.7)
-
Step 950
950 (this color)
#1B0404
oklch(15.4% 0.044 23.8)
#1B0404 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) | #090804 | 0.047 |
| Deuteranopia (no green cones) | #0F0D04 | 0.043 |
| Tritanopia (no blue cones) | #1F0104 | 0.015 |
| Achromatopsia (no color) | #0B0B0B | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B0404
#1B0404
oklch(15.4% 0.044 23.8)
- #000F11
#000F11
oklch(15.4% 0.026 204.2)
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 #1B0404, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.014
- Almost Black #070D0D ΔE 0.054
- Rich Navy #001219 ΔE 0.076
- Dark Maroon #3C0008 ΔE 0.085
- Rich Black #0D1B2A ΔE 0.097
- Deep Brown #410200 ΔE 0.099
- Very Dark Purple #2A0134 ΔE 0.106
- Dark Brown #341C02 ΔE 0.106
Use #1B0404 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.