#2A171D
Closest named color: Jet (#212529). oklch(23.3% 0.032 359.5), rgb(42, 23, 29).
Aa
White text reads best on this color (16.95:1).
About this color
#2A171D is a very dark, muted red. In OKLCH its lightness is 23%, its chroma 0.032 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Jet (#212529), ΔE 0.047 away. White text reads best on it, at 16.95:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | muted (0.032) |
| Temperature | warm |
| Nearest name | Jet (#212529) |
| Black text | 1.23:1 |
| White text | 16.95:1 |
Values
| HEX | #2A171D |
| RGB | rgb(42, 23, 29) |
| HSL | hsl(341, 29%, 13%) |
| OKLCH | oklch(23.3% 0.032 359.5) |
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 #2A171D | 16.95:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #2A171D | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #2A171D text on white | 16.95:1 | AAA | Lc 103.8 | Preferred for body text |
| #2A171D text on black | 1.23:1 | 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
#D7B7C0
oklch(81% 0.039 359.2)
-
Step 400
400
#C1919F
oklch(70.6% 0.061 359.6)
-
Step 500
500
#B17688
oklch(63.2% 0.077 359.7)
-
Step 600
600
#9C5E72
oklch(55.7% 0.085 359.4)
-
Step 700
700
#854D5F
oklch(49.1% 0.079 359.7)
-
Step 800
800
#6C3F4E
oklch(42.6% 0.066 358.8)
-
Step 900
900
#583641
oklch(37.7% 0.051 358.9)
-
Step 950
950 (this color)
#2A171D
oklch(23.3% 0.032 359.5)
#2A171D 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) | #1A1A1D | 0.034 |
| Deuteranopia (no green cones) | #1E1E1D | 0.033 |
| Tritanopia (no blue cones) | #2D1619 | 0.009 |
| Achromatopsia (no color) | #1C1C1C | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A171D
#2A171D
oklch(23.3% 0.032 359.5)
- #0A221E
#0A221E
oklch(23.1% 0.031 181)
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 #2A171D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.047
- Dark #1B2431 ΔE 0.053
- Dark Brown #341C02 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.057
- Dark Maroon #3C0008 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.067
- Chocolate Brown #411900 ΔE 0.068
- Deep Brown #410200 ΔE 0.069
Use #2A171D 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.