#A21230
Closest named color: Rouge (#AB1239). oklch(45.9% 0.174 18.2), rgb(162, 18, 48).
Aa
White text reads best on this color (7.87:1).
About this color
#A21230 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.174 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.022 away. White text reads best on it, at 7.87:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #A21230 |
| RGB | rgb(162, 18, 48) |
| HSL | hsl(348, 80%, 35%) |
| OKLCH | oklch(45.9% 0.174 18.2) |
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 #A21230 | 7.87:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #A21230 | 2.66:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #A21230 text on white | 7.87:1 | AAA | Lc 85.4 | Fine for body text |
| #A21230 text on black | 2.66:1 | Fails | Lc -16.6 | 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 800.
-
Step 50
50
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FDE3E2
oklch(93.7% 0.029 20.3)
-
Step 200
200
#FCCBCB
oklch(88.5% 0.056 18.3)
-
Step 300
300
#FBA6A8
oklch(80.9% 0.101 18)
-
Step 400
400
#F57179
oklch(70.8% 0.162 18.5)
-
Step 500
500
#EC4057
oklch(63.1% 0.207 18.3)
-
Step 600
600
#D6003D
oklch(55.5% 0.222 18.3)
-
Step 700
700
#B60033
oklch(49.2% 0.197 18.1)
-
Step 800
800 (this color)
#A21230
oklch(45.9% 0.174 18.2)
-
Step 900
900
#791324
oklch(37.7% 0.135 18.5)
-
Step 950
950
#480E16
oklch(27% 0.087 17.7)
#A21230 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) | #433F30 | 0.193 |
| Deuteranopia (no green cones) | #655C2B | 0.177 |
| Tritanopia (no blue cones) | #B20021 | 0.035 |
| Achromatopsia (no color) | #515151 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A21230
#A21230
oklch(45.9% 0.174 18.2)
- #006567
#006567
oklch(46% 0.078 197.2)
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 #A21230, closest first.
No curated palette has a color within ΔE 0.04 of #A21230.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.022
- Cranberry #9E003A ΔE 0.024
- Auburn #9B2226 ΔE 0.025
- Carmine #9D0216 ΔE 0.029
- Brown #A52A2A ΔE 0.034
- Deep Red #9A0200 ΔE 0.044
- Blood Red #980002 ΔE 0.045
- Raspberry #B00149 ΔE 0.046
Use #A21230 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.