#1B100D
Closest named color: Almost Black (#070D0D). oklch(18.7% 0.02 35.9), rgb(27, 16, 13).
Aa
White text reads best on this color (18.64:1).
About this color
#1B100D is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.045 away. White text reads best on it, at 18.64:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.12:1 |
| White text | 18.64:1 |
Values
| HEX | #1B100D |
| RGB | rgb(27, 16, 13) |
| HSL | hsl(13, 35%, 8%) |
| OKLCH | oklch(18.7% 0.02 35.9) |
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 #1B100D | 18.64:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #1B100D | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #1B100D text on white | 18.64:1 | AAA | Lc 105.2 | Preferred for body text |
| #1B100D text on black | 1.12:1 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EEE8E7
oklch(93.5% 0.007 28.8)
-
Step 200
200
#E1D6D3
oklch(88.4% 0.013 35.7)
-
Step 300
300
#CFBCB6
oklch(80.9% 0.023 38.3)
-
Step 400
400
#B69991
oklch(70.7% 0.037 35.9)
-
Step 500
500
#A48076
oklch(63.2% 0.047 36.1)
-
Step 600
600
#8F695E
oklch(55.6% 0.052 36.8)
-
Step 700
700
#79574E
oklch(49% 0.048 35.4)
-
Step 800
800
#634740
oklch(42.6% 0.04 34.5)
-
Step 900
900
#513C36
oklch(37.7% 0.032 36.5)
-
Step 950
950 (this color)
#1B100D
oklch(18.7% 0.02 35.9)
#1B100D 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) | #13110D | 0.018 |
| Deuteranopia (no green cones) | #15130D | 0.016 |
| Tritanopia (no blue cones) | #1E0E0F | 0.011 |
| Achromatopsia (no color) | #131313 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B100D
#1B100D
oklch(18.7% 0.02 35.9)
- #081519
#081519
oklch(18.6% 0.02 219.5)
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 #1B100D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.045
- Very Dark Brown #1D0200 ΔE 0.049
- Rich Navy #001219 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.061
- Dark Brown #341C02 ΔE 0.077
- Jet #212529 ΔE 0.080
- Dark Maroon #3C0008 ΔE 0.081
- Dark #1B2431 ΔE 0.084
Use #1B100D 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.