#23100B
Closest named color: Very Dark Brown (#1D0200). oklch(19.9% 0.034 35.6), rgb(35, 16, 11).
Aa
White text reads best on this color (18.25:1).
About this color
#23100B is a very dark, muted red. In OKLCH its lightness is 20%, its chroma 0.034 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.052 away. White text reads best on it, at 18.25:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.15:1 |
| White text | 18.25:1 |
Values
| HEX | #23100B |
| RGB | rgb(35, 16, 11) |
| HSL | hsl(12, 52%, 9%) |
| OKLCH | oklch(19.9% 0.034 35.6) |
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 #23100B | 18.25:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #23100B | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #23100B text on white | 18.25:1 | AAA | Lc 104.8 | Preferred for body text |
| #23100B text on black | 1.15:1 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F1E7E5
oklch(93.5% 0.011 31.1)
-
Step 200
200
#E7D4CF
oklch(88.4% 0.022 35.1)
-
Step 300
300
#D9B8AF
oklch(80.9% 0.04 35.7)
-
Step 400
400
#C59385
oklch(70.7% 0.064 36.2)
-
Step 500
500
#B57867
oklch(63.2% 0.081 36.3)
-
Step 600
600
#A0604F
oklch(55.7% 0.088 35.7)
-
Step 700
700
#894F3F
oklch(49.2% 0.083 36.3)
-
Step 800
800
#6F4134
oklch(42.7% 0.068 36.6)
-
Step 900
900
#5A372E
oklch(37.6% 0.053 35.1)
-
Step 950
950 (this color)
#23100B
oklch(19.9% 0.034 35.6)
#23100B 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) | #15130B | 0.032 |
| Deuteranopia (no green cones) | #19170B | 0.032 |
| Tritanopia (no blue cones) | #270D0F | 0.016 |
| Achromatopsia (no color) | #151515 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23100B
#23100B
oklch(19.9% 0.034 35.6)
- #011A20
#011A20
oklch(20.1% 0.034 215.5)
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 #23100B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.052
- Dark Brown #341C02 ΔE 0.062
- Almost Black #070D0D ΔE 0.064
- Dark Maroon #3C0008 ΔE 0.064
- Rich Black #0D1B2A ΔE 0.068
- Rich Navy #001219 ΔE 0.072
- Deep Brown #410200 ΔE 0.072
- Jet #212529 ΔE 0.075
Use #23100B 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.