#A11B17
Closest named color: Burnt Red (#9F2305). oklch(45.9% 0.169 28.2), rgb(161, 27, 23).
Aa
White text reads best on this color (7.82:1).
About this color
#A11B17 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.169 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Red (#9F2305), ΔE 0.016 away. White text reads best on it, at 7.82:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Burnt Red (#9F2305) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #A11B17 |
| RGB | rgb(161, 27, 23) |
| HSL | hsl(2, 75%, 36%) |
| OKLCH | oklch(45.9% 0.169 28.2) |
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 #A11B17 | 7.82:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #A11B17 | 2.68:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #A11B17 text on white | 7.82:1 | AAA | Lc 85.5 | Fine for body text |
| #A11B17 text on black | 2.68:1 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC5
oklch(88.5% 0.056 27.9)
-
Step 300
300
#FAA89D
oklch(80.9% 0.099 27.8)
-
Step 400
400
#F37567
oklch(70.7% 0.158 28.2)
-
Step 500
500
#EB473C
oklch(63.2% 0.202 28.2)
-
Step 600
600
#D61315
oklch(55.6% 0.22 28.2)
-
Step 700
700
#B80009
oklch(49.2% 0.201 28.2)
-
Step 800
800 (this color)
#A11B17
oklch(45.9% 0.169 28.2)
-
Step 900
900
#781813
oklch(37.6% 0.131 28.3)
-
Step 950
950
#47110D
oklch(27% 0.083 28.2)
#A11B17 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) | #483F14 | 0.183 |
| Deuteranopia (no green cones) | #685C0E | 0.166 |
| Tritanopia (no blue cones) | #B2001C | 0.036 |
| Achromatopsia (no color) | #525252 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A11B17
#A11B17
oklch(45.9% 0.169 28.2)
- #00636F
#00636F
oklch(45.8% 0.079 209.2)
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 #A11B17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Red #9F2305 ΔE 0.016
- Auburn #9B2226 ΔE 0.017
- Carmine #9D0216 ΔE 0.023
- Brown #A52A2A ΔE 0.025
- Deep Red #9A0200 ΔE 0.028
- Rufous #AE2012 ΔE 0.030
- Rust Red #AA2704 ΔE 0.031
- Blood Red #980002 ΔE 0.032
Use #A11B17 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.