#2B181D
Closest named color: Jet (#212529). oklch(23.6% 0.032 2.7), rgb(43, 24, 29).
Aa
White text reads best on this color (16.78:1).
About this color
#2B181D is a very dark, muted red. In OKLCH its lightness is 24%, its chroma 0.032 and its hue 3°. Its hue sits on the warm side of the wheel. The nearest named color is Jet (#212529), ΔE 0.045 away. White text reads best on it, at 16.78:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | muted (0.032) |
| Temperature | warm |
| Nearest name | Jet (#212529) |
| Black text | 1.25:1 |
| White text | 16.78:1 |
Values
| HEX | #2B181D |
| RGB | rgb(43, 24, 29) |
| HSL | hsl(344, 28%, 13%) |
| OKLCH | oklch(23.6% 0.032 2.7) |
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 #2B181D | 16.78:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #2B181D | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #2B181D text on white | 16.78:1 | AAA | Lc 103.6 | Preferred for body text |
| #2B181D text on black | 1.25:1 | 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
#F9F4F5
oklch(97.1% 0.006 3.3)
-
Step 100
100
#F1E7E9
oklch(93.6% 0.011 3.5)
-
Step 200
200
#E6D4D8
oklch(88.6% 0.021 2.3)
-
Step 300
300
#D7B7BE
oklch(80.9% 0.038 3.2)
-
Step 400
400
#C1919D
oklch(70.6% 0.06 2.2)
-
Step 500
500
#B17685
oklch(63.1% 0.076 2.9)
-
Step 600
600
#9C5E6F
oklch(55.6% 0.083 2.4)
-
Step 700
700
#854D5D
oklch(49% 0.078 2)
-
Step 800
800
#6C404C
oklch(42.8% 0.063 2.5)
-
Step 900
900
#58363F
oklch(37.7% 0.05 2.6)
-
Step 950
950 (this color)
#2B181D
oklch(23.6% 0.032 2.7)
#2B181D 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) | #1B1B1D | 0.034 |
| Deuteranopia (no green cones) | #1F1F1D | 0.033 |
| Tritanopia (no blue cones) | #2E171A | 0.008 |
| Achromatopsia (no color) | #1D1D1D | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B181D
#2B181D
oklch(23.6% 0.032 2.7)
- #0A2320
#0A2320
oklch(23.5% 0.031 184.8)
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 #2B181D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.045
- Dark Brown #341C02 ΔE 0.051
- Dark #1B2431 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.059
- Dark Maroon #3C0008 ΔE 0.062
- Chocolate Brown #411900 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.066
- Deep Brown #410200 ΔE 0.068
Use #2B181D 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.