#A90031
Closest named color: Rouge (#AB1239). oklch(46.6% 0.187 17.2), rgb(169, 0, 49).
Aa
White text reads best on this color (7.68:1).
About this color
#A90031 is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.187 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.014 away. White text reads best on it, at 7.68:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.187) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #A90031 |
| RGB | rgb(169, 0, 49) |
| HSL | hsl(343, 100%, 33%) |
| OKLCH | oklch(46.6% 0.187 17.2) |
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 #A90031 | 7.68:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #A90031 | 2.73:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #A90031 text on white | 7.68:1 | AAA | Lc 84.2 | Fine for body text |
| #A90031 text on black | 2.73:1 | Fails | Lc -17.8 | 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 700.
-
Step 50
50
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E3
oklch(93.5% 0.026 17.6)
-
Step 200
200
#F9CCCD
oklch(88.4% 0.051 16.7)
-
Step 300
300
#F5A9AB
oklch(80.8% 0.09 17.5)
-
Step 400
400
#ED777F
oklch(70.7% 0.146 17.3)
-
Step 500
500
#E34D5F
oklch(63.1% 0.185 17.3)
-
Step 600
600
#CE2646
oklch(55.6% 0.2 17.3)
-
Step 700
700 (this color)
#A90031
oklch(46.6% 0.187 17.2)
-
Step 800
800
#90172E
oklch(42.6% 0.154 17.4)
-
Step 900
900
#741D29
oklch(37.7% 0.12 17.5)
-
Step 950
950
#441318
oklch(26.9% 0.075 17.8)
#A90031 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) | #423E31 | 0.209 |
| Deuteranopia (no green cones) | #685E2C | 0.189 |
| Tritanopia (no blue cones) | #BA001B | 0.044 |
| Achromatopsia (no color) | #535353 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A90031
#A90031
oklch(46.6% 0.187 17.2)
- #006769
#006769
oklch(46.6% 0.079 197.1)
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 #A90031, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.014
- Cranberry #9E003A ΔE 0.028
- Raspberry #B00149 ΔE 0.036
- Carmine #9D0216 ΔE 0.038
- Auburn #9B2226 ΔE 0.039
- Brown #A52A2A ΔE 0.040
- Firebrick #B22222 ΔE 0.044
- Rose Red #BE013C ΔE 0.047
Use #A90031 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.