#A12121
Closest named color: Auburn (#9B2226). oklch(46.4% 0.164 26.5), rgb(161, 33, 33).
Aa
White text reads best on this color (7.62:1).
About this color
#A12121 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.164 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.013 away. White text reads best on it, at 7.62:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.75:1 |
| White text | 7.62:1 |
Values
| HEX | #A12121 |
| RGB | rgb(161, 33, 33) |
| HSL | hsl(0, 66%, 38%) |
| OKLCH | oklch(46.4% 0.164 26.5) |
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 #A12121 | 7.62:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #A12121 | 2.75:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #A12121 text on white | 7.62:1 | AAA | Lc 85.0 | Fine for body text |
| #A12121 text on black | 2.75:1 | Fails | Lc -17.0 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E2
oklch(93.5% 0.023 24.1)
-
Step 200
200
#F5CFCA
oklch(88.5% 0.044 26.8)
-
Step 300
300
#F0ADA6
oklch(80.9% 0.08 25.7)
-
Step 400
400
#E57F76
oklch(70.7% 0.127 26.1)
-
Step 500
500
#DA5A52
oklch(63% 0.163 26.3)
-
Step 600
600
#C63B36
oklch(55.7% 0.177 26.7)
-
Step 700
700 (this color)
#A12121
oklch(46.4% 0.164 26.5)
-
Step 800
800
#8A2623
oklch(42.7% 0.136 26.4)
-
Step 900
900
#6F2521
oklch(37.6% 0.106 26.5)
-
Step 950
950
#421714
oklch(27.1% 0.068 26.5)
#A12121 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) | #49421F | 0.178 |
| Deuteranopia (no green cones) | #695E1B | 0.163 |
| Tritanopia (no blue cones) | #B20023 | 0.037 |
| Achromatopsia (no color) | #545454 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A12121
#A12121
oklch(46.4% 0.164 26.5)
- #00656F
#00656F
oklch(46.3% 0.079 206.6)
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 #A12121, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.013
- Brown #A52A2A ΔE 0.017
- Burnt Red #9F2305 ΔE 0.020
- Carmine #9D0216 ΔE 0.028
- Rufous #AE2012 ΔE 0.029
- Rust Red #AA2704 ΔE 0.030
- Brick #A03623 ΔE 0.032
- Deep Red #9A0200 ΔE 0.036
Use #A12121 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.