#A01828
Closest named color: Auburn (#9B2226). oklch(45.7% 0.169 22.1), rgb(160, 24, 40).
Aa
White text reads best on this color (7.90:1).
About this color
#A01828 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.169 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.014 away. White text reads best on it, at 7.90:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #A01828 |
| RGB | rgb(160, 24, 40) |
| HSL | hsl(353, 74%, 36%) |
| OKLCH | oklch(45.7% 0.169 22.1) |
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 #A01828 | 7.90:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #A01828 | 2.65:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #A01828 text on white | 7.90:1 | AAA | Lc 85.7 | Fine for body text |
| #A01828 text on black | 2.65:1 | Fails | Lc -16.3 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FDE3E1
oklch(93.6% 0.029 23)
-
Step 200
200
#FCCCC9
oklch(88.6% 0.055 22.4)
-
Step 300
300
#FAA7A4
oklch(80.9% 0.099 21.8)
-
Step 400
400
#F37373
oklch(70.7% 0.158 21.9)
-
Step 500
500
#EA454E
oklch(63.1% 0.201 22.2)
-
Step 600
600
#D60E32
oklch(55.7% 0.219 22.1)
-
Step 700
700
#B60027
oklch(49% 0.197 22)
-
Step 800
800 (this color)
#A01828
oklch(45.7% 0.169 22.1)
-
Step 900
900
#78161F
oklch(37.6% 0.132 22)
-
Step 950
950
#471013
oklch(27% 0.083 21.8)
#A01828 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) | #453F27 | 0.185 |
| Deuteranopia (no green cones) | #665B23 | 0.168 |
| Tritanopia (no blue cones) | #B00020 | 0.032 |
| Achromatopsia (no color) | #515151 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A01828
#A01828
oklch(45.7% 0.169 22.1)
- #00646A
#00646A
oklch(45.8% 0.078 202)
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 #A01828, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.014
- Carmine #9D0216 ΔE 0.022
- Brown #A52A2A ΔE 0.027
- Rouge #AB1239 ΔE 0.032
- Burnt Red #9F2305 ΔE 0.033
- Deep Red #9A0200 ΔE 0.034
- Cranberry #9E003A ΔE 0.035
- Blood Red #980002 ΔE 0.037
Use #A01828 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.