#A0182D
Closest named color: Auburn (#9B2226). oklch(45.8% 0.168 20.1), rgb(160, 24, 45).
Aa
White text reads best on this color (7.88:1).
About this color
#A0182D is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.168 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.018 away. White text reads best on it, at 7.88:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.168) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #A0182D |
| RGB | rgb(160, 24, 45) |
| HSL | hsl(351, 74%, 36%) |
| OKLCH | oklch(45.8% 0.168 20.1) |
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 #A0182D | 7.88:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #A0182D | 2.66:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #A0182D text on white | 7.88:1 | AAA | Lc 85.6 | Fine for body text |
| #A0182D text on black | 2.66:1 | Fails | Lc -16.4 | Dividers and decoration only |
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 800.
-
Step 50
50
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FDE3E2
oklch(93.7% 0.029 20.3)
-
Step 200
200
#FCCBCA
oklch(88.4% 0.056 19.6)
-
Step 300
300
#FAA7A6
oklch(80.9% 0.099 20.2)
-
Step 400
400
#F37377
oklch(70.8% 0.158 20)
-
Step 500
500
#EA4454
oklch(63.1% 0.202 20)
-
Step 600
600
#D50D39
oklch(55.6% 0.219 20)
-
Step 700
700
#B6002D
oklch(49.1% 0.197 20.1)
-
Step 800
800 (this color)
#A0182D
oklch(45.8% 0.168 20.1)
-
Step 900
900
#781622
oklch(37.7% 0.131 20.3)
-
Step 950
950
#471015
oklch(27.1% 0.083 19.7)
#A0182D 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) | #443F2D | 0.186 |
| Deuteranopia (no green cones) | #655C28 | 0.171 |
| Tritanopia (no blue cones) | #B00022 | 0.033 |
| Achromatopsia (no color) | #515151 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A0182D
#A0182D
oklch(45.8% 0.168 20.1)
- #006468
#006468
oklch(45.7% 0.078 199.6)
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 #A0182D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.018
- Carmine #9D0216 ΔE 0.026
- Rouge #AB1239 ΔE 0.028
- Brown #A52A2A ΔE 0.029
- Cranberry #9E003A ΔE 0.030
- Deep Red #9A0200 ΔE 0.039
- Burnt Red #9F2305 ΔE 0.039
- Blood Red #980002 ΔE 0.041
Use #A0182D 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.