#AA1E28
Closest named color: Brown (#A52A2A). oklch(48% 0.174 23.8), rgb(170, 30, 40).
Aa
White text reads best on this color (7.17:1).
About this color
#AA1E28 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.174 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.015 away. White text reads best on it, at 7.17:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #AA1E28 |
| RGB | rgb(170, 30, 40) |
| HSL | hsl(356, 70%, 39%) |
| OKLCH | oklch(48% 0.174 23.8) |
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 #AA1E28 | 7.17:1 | AAA | Lc -88.3 | Fine for body text |
| Black text on #AA1E28 | 2.92:1 | Fails | Lc 20.8 | Dividers and decoration only |
| #AA1E28 text on white | 7.17:1 | AAA | Lc 83.3 | Fine for body text |
| #AA1E28 text on black | 2.92:1 | Fails | Lc -18.7 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F7CECA
oklch(88.5% 0.047 24.6)
-
Step 300
300
#F2ACA6
oklch(80.9% 0.083 24.6)
-
Step 400
400
#E97C77
oklch(70.7% 0.135 23.8)
-
Step 500
500
#DE5554
oklch(63% 0.172 23.8)
-
Step 600
600
#CA3339
oklch(55.7% 0.187 23.8)
-
Step 700
700 (this color)
#AA1E28
oklch(48% 0.174 23.8)
-
Step 800
800
#8D2025
oklch(42.6% 0.144 23.6)
-
Step 900
900
#722223
oklch(37.8% 0.113 23.6)
-
Step 950
950
#431515
oklch(27% 0.072 23.2)
#AA1E28 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) | #4B4427 | 0.191 |
| Deuteranopia (no green cones) | #6D6222 | 0.174 |
| Tritanopia (no blue cones) | #BB0024 | 0.034 |
| Achromatopsia (no color) | #575757 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA1E28
#AA1E28
oklch(48% 0.174 23.8)
- #006B73
#006B73
oklch(48.1% 0.082 203.8)
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 #AA1E28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.015
- Firebrick #B22222 ΔE 0.020
- Rufous #AE2012 ΔE 0.021
- Rouge #AB1239 ΔE 0.027
- Rust Red #AA2704 ΔE 0.031
- Auburn #9B2226 ΔE 0.031
- Burnt Red #9F2305 ΔE 0.036
- Brick #A03623 ΔE 0.038
Use #AA1E28 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.