#A11D37
Closest named color: Rouge (#AB1239). oklch(46.5% 0.166 16.6), rgb(161, 29, 55).
Aa
White text reads best on this color (7.64:1).
About this color
#A11D37 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.166 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.021 away. White text reads best on it, at 7.64:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #A11D37 |
| RGB | rgb(161, 29, 55) |
| HSL | hsl(348, 69%, 37%) |
| OKLCH | oklch(46.5% 0.166 16.6) |
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 #A11D37 | 7.64:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #A11D37 | 2.74:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #A11D37 text on white | 7.64:1 | AAA | Lc 85.0 | Fine for body text |
| #A11D37 text on black | 2.74:1 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F5CECF
oklch(88.5% 0.044 16.3)
-
Step 300
300
#F0ACAE
oklch(80.9% 0.08 17)
-
Step 400
400
#E57D84
oklch(70.7% 0.128 16.6)
-
Step 500
500
#DA5766
oklch(63% 0.164 16.3)
-
Step 600
600
#C5374D
oklch(55.5% 0.178 16.6)
-
Step 700
700 (this color)
#A11D37
oklch(46.5% 0.166 16.6)
-
Step 800
800
#8A2333
oklch(42.6% 0.137 16.7)
-
Step 900
900
#6F232D
oklch(37.6% 0.107 16.3)
-
Step 950
950
#42161A
oklch(27.1% 0.068 17.4)
#A11D37 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) | #454237 | 0.184 |
| Deuteranopia (no green cones) | #665D33 | 0.168 |
| Tritanopia (no blue cones) | #B10029 | 0.035 |
| Achromatopsia (no color) | #535353 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A11D37
#A11D37
oklch(46.5% 0.166 16.6)
- #006768
#006768
oklch(46.6% 0.079 195.9)
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 #A11D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.021
- Auburn #9B2226 ΔE 0.026
- Cranberry #9E003A ΔE 0.027
- Brown #A52A2A ΔE 0.031
- Carmine #9D0216 ΔE 0.038
- Raspberry #B00149 ΔE 0.043
- Berry #990F4B ΔE 0.044
- Purple Red #990147 ΔE 0.046
Use #A11D37 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.