#1B100B
Closest named color: Almost Black (#070D0D). oklch(18.6% 0.021 45.4), rgb(27, 16, 11).
Aa
White text reads best on this color (18.65:1).
About this color
#1B100B is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.021. 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 18.65:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.12:1 |
| White text | 18.65:1 |
Values
| HEX | #1B100B |
| RGB | rgb(27, 16, 11) |
| HSL | hsl(19, 42%, 7%) |
| OKLCH | oklch(18.6% 0.021 45.4) |
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 #1B100B | 18.65:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #1B100B | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #1B100B text on white | 18.65:1 | AAA | Lc 105.2 | Preferred for body text |
| #1B100B 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
#EEE8E6
oklch(93.5% 0.007 39.5)
-
Step 200
200
#E2D6D2
oklch(88.5% 0.014 39.4)
-
Step 300
300
#CFBCB3
oklch(80.9% 0.025 47.1)
-
Step 400
400
#B7998C
oklch(70.6% 0.041 44.7)
-
Step 500
500
#A58070
oklch(63.1% 0.052 44.5)
-
Step 600
600
#8F6958
oklch(55.5% 0.055 45.2)
-
Step 700
700
#7A5848
oklch(49.2% 0.052 46.2)
-
Step 800
800
#63483B
oklch(42.7% 0.043 46.8)
-
Step 900
900
#513C33
oklch(37.7% 0.033 44.3)
-
Step 950
950 (this color)
#1B100B
oklch(18.6% 0.021 45.4)
#1B100B 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) | #13110B | 0.018 |
| Deuteranopia (no green cones) | #15130B | 0.016 |
| Tritanopia (no blue cones) | #1E0E0F | 0.014 |
| Achromatopsia (no color) | #121212 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B100B
#1B100B
oklch(18.6% 0.021 45.4)
- #08151A
#08151A
oklch(18.6% 0.021 224.6)
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 #1B100B, 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 0.055
- Rich Black #0D1B2A ΔE 0.064
- Dark Brown #341C02 ΔE 0.076
- Jet #212529 ΔE 0.082
- Dark Maroon #3C0008 ΔE 0.082
- Dark #1B2431 ΔE 0.086
Use #1B100B 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.