#AE431E
Closest named color: Sinopia (#BB3E03). oklch(52.4% 0.148 38.3), rgb(174, 67, 30).
Aa
White text reads best on this color (5.79:1).
About this color
#AE431E is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.148 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.026 away. White text reads best on it, at 5.79:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.148) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #AE431E |
| RGB | rgb(174, 67, 30) |
| HSL | hsl(15, 71%, 40%) |
| OKLCH | oklch(52.4% 0.148 38.3) |
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 #AE431E | 5.79:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #AE431E | 3.62:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #AE431E text on white | 5.79:1 | AA | Lc 78.2 | Fine for body text |
| #AE431E text on black | 3.62:1 | AA large text | Lc -23.6 | 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 600.
-
Step 50
50
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#F0D1C8
oklch(88.4% 0.037 36.8)
-
Step 300
300
#E8B2A2
oklch(80.9% 0.067 37.1)
-
Step 400
400
#DA886F
oklch(70.6% 0.107 37.7)
-
Step 500
500
#CD6848
oklch(63% 0.136 38.2)
-
Step 600
600 (this color)
#AE431E
oklch(52.4% 0.148 38.3)
-
Step 700
700
#9F3D1C
oklch(49.1% 0.138 38.1)
-
Step 800
800
#813319
oklch(42.6% 0.115 38.3)
-
Step 900
900
#682E1B
oklch(37.7% 0.089 38.5)
-
Step 950
950
#3D1B11
oklch(26.9% 0.056 37.2)
#AE431E 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) | #625618 | 0.147 |
| Deuteranopia (no green cones) | #7C6E19 | 0.134 |
| Tritanopia (no blue cones) | #C0283C | 0.066 |
| Achromatopsia (no color) | #656565 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AE431E
#AE431E
oklch(52.4% 0.148 38.3)
- #00768E
#00768E
oklch(52.3% 0.094 218.5)
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 #AE431E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.026
- Burnt Umber #A0450E ΔE 0.030
- Cinnamon #AC4F06 ΔE 0.031
- Rusty Red #AF2F0D ΔE 0.033
- Sienna #A0522D ΔE 0.036
- Russet #A13905 ΔE 0.037
- Brick #A03623 ΔE 0.043
- Burnt Siena #B75203 ΔE 0.043
Use #AE431E 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.