#1B0004
Closest named color: Very Dark Brown (#1D0200). oklch(14.1% 0.057 13), rgb(27, 0, 4).
Aa
White text reads best on this color (20.03:1).
About this color
#1B0004 is a very dark, muted red. In OKLCH its lightness is 14%, its chroma 0.057 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.023 away. White text reads best on it, at 20.03:1.
| Hue family | Reds |
| Lightness | very dark (14%) |
| Chroma | muted (0.057) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.04:1 |
| White text | 20.03:1 |
Values
| HEX | #1B0004 |
| RGB | rgb(27, 0, 4) |
| HSL | hsl(351, 100%, 5%) |
| OKLCH | oklch(14.1% 0.057 13) |
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 #1B0004 | 20.03:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #1B0004 | 1.04:1 | Fails | Lc 0.0 | Not readable |
| #1B0004 text on white | 20.03:1 | AAA | Lc 105.6 | Preferred for body text |
| #1B0004 text on black | 1.04:1 | 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F7E5E6
oklch(93.7% 0.02 13.6)
-
Step 200
200
#F1D0D2
oklch(88.6% 0.037 13.7)
-
Step 300
300
#E8AFB4
oklch(80.8% 0.067 12.8)
-
Step 400
400
#DB848D
oklch(70.8% 0.107 13.5)
-
Step 500
500
#CE6272
oklch(63.1% 0.137 12.6)
-
Step 600
600
#B9465A
oklch(55.5% 0.149 12.9)
-
Step 700
700
#9F374A
oklch(49.1% 0.138 12.9)
-
Step 800
800
#812E3D
oklch(42.6% 0.115 12.5)
-
Step 900
900
#682A34
oklch(37.6% 0.089 12.5)
-
Step 950
950 (this color)
#1B0004
oklch(14.1% 0.057 13)
#1B0004 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) | #050504 | 0.063 |
| Deuteranopia (no green cones) | #0C0A03 | 0.058 |
| Tritanopia (no blue cones) | #1F0001 | 0.016 |
| Achromatopsia (no color) | #080808 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B0004
#1B0004
oklch(14.1% 0.057 13)
- #000C0C
#000C0C
oklch(14% 0.024 194.8)
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 #1B0004, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.023
- Almost Black #070D0D ΔE 0.067
- Rich Navy #001219 ΔE 0.090
- Dark Maroon #3C0008 ΔE 0.091
- Very Dark Purple #2A0134 ΔE 0.106
- Deep Brown #410200 ΔE 0.106
- Midnight Purple #280137 ΔE 0.110
- Rich Black #0D1B2A ΔE 0.111
Use #1B0004 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.