#AE402B
Closest named color: Rusty Red (#AF2F0D). oklch(52.1% 0.148 32.8), rgb(174, 64, 43).
Aa
White text reads best on this color (5.88:1).
About this color
#AE402B is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.148 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.030 away. White text reads best on it, at 5.88:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.148) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #AE402B |
| RGB | rgb(174, 64, 43) |
| HSL | hsl(10, 60%, 43%) |
| OKLCH | oklch(52.1% 0.148 32.8) |
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 #AE402B | 5.88:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #AE402B | 3.56:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #AE402B text on white | 5.88:1 | AA | Lc 78.6 | Fine for body text |
| #AE402B text on black | 3.56:1 | AA large text | Lc -23.2 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F7E5E1
oklch(93.5% 0.021 32.5)
-
Step 200
200
#F2D0C9
oklch(88.4% 0.04 31.6)
-
Step 300
300
#EBB0A3
oklch(80.8% 0.072 32.7)
-
Step 400
400
#DF8572
oklch(70.8% 0.115 32.8)
-
Step 500
500
#D3634C
oklch(63.1% 0.147 33.1)
-
Step 600
600
#BE462F
oklch(55.5% 0.159 32.9)
-
Step 700
700 (this color)
#AE402B
oklch(52.1% 0.148 32.8)
-
Step 800
800
#852E1E
oklch(42.7% 0.123 32.6)
-
Step 900
900
#6B2A1E
oklch(37.6% 0.096 32.3)
-
Step 950
950
#3F1A12
oklch(27.1% 0.06 33.5)
#AE402B 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) | #5F5528 | 0.152 |
| Deuteranopia (no green cones) | #7A6D27 | 0.139 |
| Tritanopia (no blue cones) | #BF253C | 0.056 |
| Achromatopsia (no color) | #646464 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AE402B
#AE402B
oklch(52.1% 0.148 32.8)
- #007688
#007688
oklch(52% 0.091 213)
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 #AE402B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.030
- Sinopia #BB3E03 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.035
- Brick #A03623 ΔE 0.037
- Burnt Umber #A0450E ΔE 0.039
- Russet #A13905 ΔE 0.039
- Sienna #A0522D ΔE 0.043
- Firebrick #B22222 ΔE 0.043
Use #AE402B 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.