#2B181F
Closest named color: Jet (#212529). oklch(23.7% 0.033 356.2), rgb(43, 24, 31).
Aa
White text reads best on this color (16.75:1).
About this color
#2B181F is a very dark, muted red. In OKLCH its lightness is 24%, its chroma 0.033 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Jet (#212529), ΔE 0.044 away. White text reads best on it, at 16.75:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | muted (0.033) |
| Temperature | warm |
| Nearest name | Jet (#212529) |
| Black text | 1.25:1 |
| White text | 16.75:1 |
Values
| HEX | #2B181F |
| RGB | rgb(43, 24, 31) |
| HSL | hsl(338, 28%, 13%) |
| OKLCH | oklch(23.7% 0.033 356.2) |
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 #2B181F | 16.75:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #2B181F | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #2B181F text on white | 16.75:1 | AAA | Lc 103.6 | Preferred for body text |
| #2B181F 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#F0E7EA
oklch(93.6% 0.011 354.9)
-
Step 200
200
#E6D4D9
oklch(88.6% 0.021 358.7)
-
Step 300
300
#D6B7C1
oklch(80.9% 0.038 356.6)
-
Step 400
400
#C191A2
oklch(70.7% 0.062 355.7)
-
Step 500
500
#B0758B
oklch(63% 0.079 355.6)
-
Step 600
600
#9B5D75
oklch(55.5% 0.086 355.5)
-
Step 700
700
#844D62
oklch(49.1% 0.079 356)
-
Step 800
800
#6C3F50
oklch(42.7% 0.067 356.1)
-
Step 900
900
#583642
oklch(37.8% 0.052 357.1)
-
Step 950
950 (this color)
#2B181F
oklch(23.7% 0.033 356.2)
#2B181F 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) | #1A1C1F | 0.036 |
| Deuteranopia (no green cones) | #1F1F1F | 0.033 |
| Tritanopia (no blue cones) | #2E171A | 0.011 |
| Achromatopsia (no color) | #1E1E1E | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B181F
#2B181F
oklch(23.7% 0.033 356.2)
- #0B241E
#0B241E
oklch(23.8% 0.033 175.3)
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 #2B181F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.044
- Dark #1B2431 ΔE 0.050
- Dark Brown #341C02 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.057
- Dark Maroon #3C0008 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.064
- Chocolate Brown #411900 ΔE 0.067
- Eggplant #380835 ΔE 0.068
Use #2B181F 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.