#2B100A
Closest named color: Dark Maroon (#3C0008). oklch(21.4% 0.047 33.8), rgb(43, 16, 10).
Aa
White text reads best on this color (17.77:1).
About this color
#2B100A is a very dark, muted red. In OKLCH its lightness is 21%, its chroma 0.047 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.048 away. White text reads best on it, at 17.77:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | muted (0.047) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.18:1 |
| White text | 17.77:1 |
Values
| HEX | #2B100A |
| RGB | rgb(43, 16, 10) |
| HSL | hsl(11, 62%, 10%) |
| OKLCH | oklch(21.4% 0.047 33.8) |
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 #2B100A | 17.77:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #2B100A | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #2B100A text on white | 17.77:1 | AAA | Lc 104.4 | Preferred for body text |
| #2B100A text on black | 1.18:1 | 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F4E6E3
oklch(93.5% 0.016 32)
-
Step 200
200
#EDD2CC
oklch(88.5% 0.031 32.6)
-
Step 300
300
#E2B4AA
oklch(80.8% 0.056 32.4)
-
Step 400
400
#D28C7C
oklch(70.7% 0.089 33.5)
-
Step 500
500
#C46E5B
oklch(63.1% 0.113 33.5)
-
Step 600
600
#AF5541
oklch(55.6% 0.122 33.8)
-
Step 700
700
#964533
oklch(49.1% 0.113 33.9)
-
Step 800
800
#7A392B
oklch(42.7% 0.094 33.5)
-
Step 900
900
#633227
oklch(37.8% 0.074 33.8)
-
Step 950
950 (this color)
#2B100A
oklch(21.4% 0.047 33.8)
#2B100A 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) | #171409 | 0.046 |
| Deuteranopia (no green cones) | #1E1A09 | 0.042 |
| Tritanopia (no blue cones) | #300B0F | 0.020 |
| Achromatopsia (no color) | #181818 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B100A
#2B100A
oklch(21.4% 0.047 33.8)
- #001D24
#001D24
oklch(21.3% 0.038 216.3)
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 #2B100A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.048
- Dark Brown #341C02 ΔE 0.049
- Deep Brown #410200 ΔE 0.054
- Very Dark Brown #1D0200 ΔE 0.063
- Chocolate Brown #411900 ΔE 0.064
- Mahogany #4A0100 ΔE 0.073
- Jet #212529 ΔE 0.073
- Rich Black #0D1B2A ΔE 0.078
Use #2B100A 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.