#1B0505
Closest named color: Very Dark Brown (#1D0200). oklch(15.7% 0.041 23), rgb(27, 5, 5).
Aa
White text reads best on this color (19.61:1).
About this color
#1B0505 is a very dark, muted red. In OKLCH its lightness is 16%, its chroma 0.041 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.017 away. White text reads best on it, at 19.61:1.
| Hue family | Reds |
| Lightness | very dark (16%) |
| Chroma | muted (0.041) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.07:1 |
| White text | 19.61:1 |
Values
| HEX | #1B0505 |
| RGB | rgb(27, 5, 5) |
| HSL | hsl(0, 69%, 6%) |
| OKLCH | oklch(15.7% 0.041 23) |
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 #1B0505 | 19.61:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #1B0505 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #1B0505 text on white | 19.61:1 | AAA | Lc 105.6 | Preferred for body text |
| #1B0505 text on black | 1.07:1 | 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
#F3E6E5
oklch(93.5% 0.014 22.8)
-
Step 200
200
#EBD3D1
oklch(88.6% 0.027 23.4)
-
Step 300
300
#DFB5B2
oklch(80.9% 0.049 23)
-
Step 400
400
#CD8E8A
oklch(70.8% 0.077 23.3)
-
Step 500
500
#BE706D
oklch(63% 0.099 22.6)
-
Step 600
600
#A95755
oklch(55.5% 0.108 22.6)
-
Step 700
700
#914745
oklch(49% 0.101 23)
-
Step 800
800
#763B39
oklch(42.7% 0.083 23.2)
-
Step 900
900
#603331
oklch(37.8% 0.065 23.3)
-
Step 950
950 (this color)
#1B0505
oklch(15.7% 0.041 23)
#1B0505 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) | #0A0905 | 0.043 |
| Deuteranopia (no green cones) | #100D05 | 0.038 |
| Tritanopia (no blue cones) | #1F0305 | 0.012 |
| Achromatopsia (no color) | #0C0C0C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B0505
#1B0505
oklch(15.7% 0.041 23)
- #001012
#001012
oklch(15.8% 0.027 203.9)
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 #1B0505, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.017
- Almost Black #070D0D ΔE 0.051
- Rich Navy #001219 ΔE 0.072
- Dark Maroon #3C0008 ΔE 0.084
- Rich Black #0D1B2A ΔE 0.093
- Deep Brown #410200 ΔE 0.097
- Dark Brown #341C02 ΔE 0.103
- Very Dark Purple #2A0134 ΔE 0.104
Use #1B0505 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.