#A11529
Closest named color: Auburn (#9B2226). oklch(45.7% 0.171 21.3), rgb(161, 21, 41).
Aa
White text reads best on this color (7.91:1).
About this color
#A11529 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.171 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.018 away. White text reads best on it, at 7.91:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #A11529 |
| RGB | rgb(161, 21, 41) |
| HSL | hsl(351, 77%, 36%) |
| OKLCH | oklch(45.7% 0.171 21.3) |
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 #A11529 | 7.91:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #A11529 | 2.65:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #A11529 text on white | 7.91:1 | AAA | Lc 85.6 | Fine for body text |
| #A11529 text on black | 2.65:1 | Fails | Lc -16.4 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FDE3E1
oklch(93.6% 0.029 23)
-
Step 200
200
#FCCBC9
oklch(88.4% 0.056 21)
-
Step 300
300
#FBA7A4
oklch(81% 0.1 21.7)
-
Step 400
400
#F47274
oklch(70.7% 0.16 21.1)
-
Step 500
500
#EB424F
oklch(63% 0.205 21.3)
-
Step 600
600
#D70333
oklch(55.6% 0.223 21.4)
-
Step 700
700
#B60029
oklch(49% 0.197 21.4)
-
Step 800
800 (this color)
#A11529
oklch(45.7% 0.171 21.3)
-
Step 900
900
#791520
oklch(37.8% 0.133 21.2)
-
Step 950
950
#470F13
oklch(26.9% 0.085 21.1)
#A11529 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) | #443E28 | 0.189 |
| Deuteranopia (no green cones) | #665C24 | 0.173 |
| Tritanopia (no blue cones) | #B2001F | 0.035 |
| Achromatopsia (no color) | #515151 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A11529
#A11529
oklch(45.7% 0.171 21.3)
- #006469
#006469
oklch(45.8% 0.078 200.8)
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 #A11529, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.018
- Carmine #9D0216 ΔE 0.022
- Rouge #AB1239 ΔE 0.029
- Brown #A52A2A ΔE 0.029
- Cranberry #9E003A ΔE 0.033
- Deep Red #9A0200 ΔE 0.036
- Burnt Red #9F2305 ΔE 0.036
- Blood Red #980002 ΔE 0.038
Use #A11529 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.