#1B0100
Closest named color: Very Dark Brown (#1D0200). oklch(14.3% 0.054 32.1), rgb(27, 1, 0).
Aa
White text reads best on this color (19.98:1).
About this color
#1B0100 is a very dark, muted red. In OKLCH its lightness is 14%, its chroma 0.054 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.008 away. White text reads best on it, at 19.98:1.
| Hue family | Reds |
| Lightness | very dark (14%) |
| Chroma | muted (0.054) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.05:1 |
| White text | 19.98:1 |
Values
| HEX | #1B0100 |
| RGB | rgb(27, 1, 0) |
| HSL | hsl(2, 100%, 5%) |
| OKLCH | oklch(14.3% 0.054 32.1) |
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 #1B0100 | 19.98:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #1B0100 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #1B0100 text on white | 19.98:1 | AAA | Lc 105.6 | Preferred for body text |
| #1B0100 text on black | 1.05:1 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E2
oklch(93.7% 0.018 34.3)
-
Step 200
200
#F0D1CB
oklch(88.5% 0.036 30.8)
-
Step 300
300
#E7B2A7
oklch(80.9% 0.064 31.9)
-
Step 400
400
#D98878
oklch(70.7% 0.103 31.9)
-
Step 500
500
#CC6855
oklch(63.1% 0.131 32.1)
-
Step 600
600
#B84D3A
oklch(55.7% 0.143 32)
-
Step 700
700
#9E3D2C
oklch(49.1% 0.133 32.1)
-
Step 800
800
#803326
oklch(42.6% 0.11 31.6)
-
Step 900
900
#672E23
oklch(37.7% 0.085 32.4)
-
Step 950
950 (this color)
#1B0100
oklch(14.3% 0.054 32.1)
#1B0100 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) | #070500 | 0.056 |
| Deuteranopia (no green cones) | #0E0B00 | 0.052 |
| Tritanopia (no blue cones) | #1F0001 | 0.012 |
| Achromatopsia (no color) | #080808 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B0100
#1B0100
oklch(14.3% 0.054 32.1)
- #000C10
#000C10
oklch(14.2% 0.025 215.2)
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 #1B0100, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.008
- Almost Black #070D0D ΔE 0.064
- Rich Navy #001219 ΔE 0.089
- Dark Maroon #3C0008 ΔE 0.091
- Deep Brown #410200 ΔE 0.103
- Rich Black #0D1B2A ΔE 0.113
- Dark Brown #341C02 ΔE 0.115
- Very Dark Purple #2A0134 ΔE 0.119
Use #1B0100 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.