#AA271C
Closest named color: Rufous (#AE2012). oklch(48.5% 0.169 29.5), rgb(170, 39, 28).
Aa
White text reads best on this color (6.96:1).
About this color
#AA271C is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.169 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.010 away. White text reads best on it, at 6.96:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 3.01:1 |
| White text | 6.96:1 |
Values
| HEX | #AA271C |
| RGB | rgb(170, 39, 28) |
| HSL | hsl(5, 72%, 39%) |
| OKLCH | oklch(48.5% 0.169 29.5) |
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 #AA271C | 6.96:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #AA271C | 3.01:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #AA271C text on white | 6.96:1 | AA | Lc 82.7 | Fine for body text |
| #AA271C text on black | 3.01:1 | AA large text | Lc -19.3 | 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 700.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E4E1
oklch(93.5% 0.023 27.3)
-
Step 200
200
#F6CFC8
oklch(88.6% 0.045 29.9)
-
Step 300
300
#F1ADA2
oklch(80.9% 0.082 29.3)
-
Step 400
400
#E77F70
oklch(70.8% 0.131 29.3)
-
Step 500
500
#DC5949
oklch(63.1% 0.168 29.5)
-
Step 600
600
#C7392B
oklch(55.5% 0.181 29.6)
-
Step 700
700 (this color)
#AA271C
oklch(48.5% 0.169 29.5)
-
Step 800
800
#8C251B
oklch(42.8% 0.14 29.6)
-
Step 900
900
#70241C
oklch(37.6% 0.109 29.2)
-
Step 950
950
#421711
oklch(27% 0.068 30.2)
#AA271C 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) | #504719 | 0.181 |
| Deuteranopia (no green cones) | #706415 | 0.165 |
| Tritanopia (no blue cones) | #BC0026 | 0.043 |
| Achromatopsia (no color) | #595959 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA271C
#AA271C
oklch(48.5% 0.169 29.5)
- #006C79
#006C79
oklch(48.6% 0.084 209.2)
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 #AA271C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.010
- Rust Red #AA2704 ΔE 0.013
- Brown #A52A2A ΔE 0.015
- Firebrick #B22222 ΔE 0.018
- Rusty Red #AF2F0D ΔE 0.021
- Brick #A03623 ΔE 0.026
- Burnt Red #9F2305 ΔE 0.028
- Auburn #9B2226 ΔE 0.036
Use #AA271C 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.