#A90019
Closest named color: Carmine (#9D0216). oklch(46.3% 0.188 25), rgb(169, 0, 25).
Aa
White text reads best on this color (7.77:1).
About this color
#A90019 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.188 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Carmine (#9D0216), ΔE 0.026 away. White text reads best on it, at 7.77:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Carmine (#9D0216) |
| Black text | 2.70:1 |
| White text | 7.77:1 |
Values
| HEX | #A90019 |
| RGB | rgb(169, 0, 25) |
| HSL | hsl(351, 100%, 33%) |
| OKLCH | oklch(46.3% 0.188 25) |
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 #A90019 | 7.77:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #A90019 | 2.70:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #A90019 text on white | 7.77:1 | AAA | Lc 84.4 | Fine for body text |
| #A90019 text on black | 2.70:1 | Fails | Lc -17.6 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC8
oklch(88.5% 0.05 25.7)
-
Step 300
300
#F6AAA3
oklch(80.9% 0.091 25.1)
-
Step 400
400
#ED7972
oklch(70.7% 0.144 24.9)
-
Step 500
500
#E44F4C
oklch(63.1% 0.186 25.2)
-
Step 600
600
#CF282F
oklch(55.6% 0.201 25.1)
-
Step 700
700 (this color)
#A90019
oklch(46.3% 0.188 25)
-
Step 800
800
#91181E
oklch(42.6% 0.155 24.9)
-
Step 900
900
#751E1E
oklch(37.8% 0.121 25.1)
-
Step 950
950
#451312
oklch(27% 0.077 24.9)
#A90019 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) | #443D17 | 0.209 |
| Deuteranopia (no green cones) | #6A5E0F | 0.187 |
| Tritanopia (no blue cones) | #BB000F | 0.039 |
| Achromatopsia (no color) | #525252 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A90019
#A90019
oklch(46.3% 0.188 25)
- #00656E
#00656E
oklch(46.3% 0.079 205.5)
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 #A90019, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carmine #9D0216 ΔE 0.026
- Rufous #AE2012 ΔE 0.030
- Auburn #9B2226 ΔE 0.032
- Brown #A52A2A ΔE 0.033
- Rouge #AB1239 ΔE 0.034
- Burnt Red #9F2305 ΔE 0.035
- Firebrick #B22222 ΔE 0.035
- Deep Red #9A0200 ΔE 0.036
Use #A90019 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.