#A11129
Closest named color: Auburn (#9B2226). oklch(45.5% 0.173 20.8), rgb(161, 17, 41).
Aa
White text reads best on this color (7.99:1).
About this color
#A11129 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.173 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.020 away. White text reads best on it, at 7.99:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #A11129 |
| RGB | rgb(161, 17, 41) |
| HSL | hsl(350, 81%, 35%) |
| OKLCH | oklch(45.5% 0.173 20.8) |
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 #A11129 | 7.99:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #A11129 | 2.62:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #A11129 text on white | 7.99:1 | AAA | Lc 85.8 | Fine for body text |
| #A11129 text on black | 2.62:1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FDE3E1
oklch(93.6% 0.029 23)
-
Step 200
200
#FDCBC9
oklch(88.5% 0.057 21)
-
Step 300
300
#FBA6A4
oklch(80.8% 0.101 21)
-
Step 400
400
#F57174
oklch(70.7% 0.163 20.8)
-
Step 500
500
#EC4050
oklch(63% 0.207 20.7)
-
Step 600
600
#D70035
oklch(55.6% 0.223 20.7)
-
Step 700
700
#B6002B
oklch(49.1% 0.197 20.8)
-
Step 800
800 (this color)
#A11129
oklch(45.5% 0.173 20.8)
-
Step 900
900
#791320
oklch(37.6% 0.135 20.7)
-
Step 950
950
#480F13
oklch(27.1% 0.086 21.3)
#A11129 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) | #433E28 | 0.192 |
| Deuteranopia (no green cones) | #655B24 | 0.175 |
| Tritanopia (no blue cones) | #B2001D | 0.036 |
| Achromatopsia (no color) | #515151 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A11129
#A11129
oklch(45.5% 0.173 20.8)
- #006368
#006368
oklch(45.4% 0.077 200.9)
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 #A11129, closest first.
No curated palette has a color within ΔE 0.04 of #A11129.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.020
- Carmine #9D0216 ΔE 0.021
- Rouge #AB1239 ΔE 0.029
- Cranberry #9E003A ΔE 0.030
- Brown #A52A2A ΔE 0.032
- Deep Red #9A0200 ΔE 0.035
- Blood Red #980002 ΔE 0.037
- Burnt Red #9F2305 ΔE 0.039
Use #A11129 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.