#2A181B
Closest named color: Jet (#212529). oklch(23.4% 0.029 8.7), rgb(42, 24, 27).
Aa
White text reads best on this color (16.86:1).
About this color
#2A181B is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.045 away. White text reads best on it, at 16.86:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.24:1 |
| White text | 16.86:1 |
Values
| HEX | #2A181B |
| RGB | rgb(42, 24, 27) |
| HSL | hsl(350, 27%, 13%) |
| OKLCH | oklch(23.4% 0.029 8.7) |
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 #2A181B | 16.86:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #2A181B | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #2A181B text on white | 16.86:1 | AAA | Lc 103.7 | Preferred for body text |
| #2A181B text on black | 1.24:1 | 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
#F0E7E8
oklch(93.5% 0.01 9.5)
-
Step 200
200
#E5D4D6
oklch(88.4% 0.019 9.4)
-
Step 300
300
#D6B8BC
oklch(81% 0.035 8.8)
-
Step 400
400
#C09399
oklch(70.7% 0.055 9.6)
-
Step 500
500
#B07881
oklch(63.2% 0.071 8.7)
-
Step 600
600
#9B606A
oklch(55.7% 0.078 8.9)
-
Step 700
700
#844F58
oklch(49.1% 0.072 9.1)
-
Step 800
800
#6B4148
oklch(42.7% 0.059 9)
-
Step 900
900
#57373C
oklch(37.6% 0.046 9.3)
-
Step 950
950 (this color)
#2A181B
oklch(23.4% 0.029 8.7)
#2A181B 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) | #1B1B1B | 0.032 |
| Deuteranopia (no green cones) | #1F1E1B | 0.029 |
| Tritanopia (no blue cones) | #2D1719 | 0.007 |
| Achromatopsia (no color) | #1D1D1D | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A181B
#2A181B
oklch(23.4% 0.029 8.7)
- #0B2221
#0B2221
oklch(23.3% 0.029 191.6)
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 #2A181B, 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 0.049
- Dark #1B2431 ΔE 0.053
- Rich Black #0D1B2A ΔE 0.058
- Dark Maroon #3C0008 ΔE 0.063
- Chocolate Brown #411900 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.068
- Deep Brown #410200 ΔE 0.068
Use #2A181B 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.