#28131B
Closest named color: Rich Black (#0D1B2A). oklch(22% 0.037 356.2), rgb(40, 19, 27).
Aa
White text reads best on this color (17.51:1).
About this color
#28131B is a very dark, muted red. In OKLCH its lightness is 22%, its chroma 0.037 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.057 away. White text reads best on it, at 17.51:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | muted (0.037) |
| Temperature | warm |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.51:1 |
Values
| HEX | #28131B |
| RGB | rgb(40, 19, 27) |
| HSL | hsl(337, 36%, 12%) |
| OKLCH | oklch(22% 0.037 356.2) |
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 #28131B | 17.51:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #28131B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #28131B text on white | 17.51:1 | AAA | Lc 104.2 | Preferred for body text |
| #28131B text on black | 1.19:1 | 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
#F1E7EA
oklch(93.7% 0.012 357)
-
Step 200
200
#E7D3D9
oklch(88.5% 0.024 357.4)
-
Step 300
300
#D9B6C1
oklch(81% 0.043 357.2)
-
Step 400
400
#C58FA2
oklch(70.8% 0.07 356.2)
-
Step 500
500
#B5728B
oklch(63.1% 0.09 356)
-
Step 600
600
#A05A75
oklch(55.6% 0.097 356.2)
-
Step 700
700
#884A62
oklch(49.1% 0.089 356.2)
-
Step 800
800
#6F3D50
oklch(42.7% 0.074 356.5)
-
Step 900
900
#5A3442
oklch(37.6% 0.058 356.6)
-
Step 950
950 (this color)
#28131B
oklch(22% 0.037 356.2)
#28131B 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) | #16171B | 0.039 |
| Deuteranopia (no green cones) | #1B1B1B | 0.037 |
| Tritanopia (no blue cones) | #2B1216 | 0.011 |
| Achromatopsia (no color) | #191919 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28131B
#28131B
oklch(22% 0.037 356.2)
- #03201A
#03201A
oklch(22% 0.037 176.7)
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 #28131B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.057
- Jet #212529 ΔE 0.059
- Dark Maroon #3C0008 ΔE 0.059
- Dark #1B2431 ΔE 0.062
- Dark Brown #341C02 ΔE 0.063
- Eggplant #380835 ΔE 0.069
- Deep Brown #410200 ΔE 0.070
- Dark Plum #3F012C ΔE 0.072
Use #28131B 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.