#AE3F27
Closest named color: Rusty Red (#AF2F0D). oklch(51.9% 0.15 33.8), rgb(174, 63, 39).
Aa
White text reads best on this color (5.93:1).
About this color
#AE3F27 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.150 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.027 away. White text reads best on it, at 5.93:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.54:1 |
| White text | 5.93:1 |
Values
| HEX | #AE3F27 |
| RGB | rgb(174, 63, 39) |
| HSL | hsl(11, 63%, 42%) |
| OKLCH | oklch(51.9% 0.15 33.8) |
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 #AE3F27 | 5.93:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #AE3F27 | 3.54:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #AE3F27 text on white | 5.93:1 | AA | Lc 78.8 | Fine for body text |
| #AE3F27 text on black | 3.54:1 | AA large text | Lc -23.0 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F3D0C8
oklch(88.5% 0.041 33)
-
Step 300
300
#EBB0A2
oklch(80.8% 0.072 33.7)
-
Step 400
400
#DF8570
oklch(70.8% 0.116 34)
-
Step 500
500
#D4624A
oklch(63.1% 0.149 33.4)
-
Step 600
600
#BF452B
oklch(55.5% 0.162 33.7)
-
Step 700
700 (this color)
#AE3F27
oklch(51.9% 0.15 33.8)
-
Step 800
800
#852E1B
oklch(42.6% 0.124 33.9)
-
Step 900
900
#6C2A1C
oklch(37.7% 0.098 33.6)
-
Step 950
950
#3F1A11
oklch(27% 0.06 34.9)
#AE3F27 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) | #5E5424 | 0.154 |
| Deuteranopia (no green cones) | #7A6D23 | 0.141 |
| Tritanopia (no blue cones) | #BF223A | 0.058 |
| Achromatopsia (no color) | #646464 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AE3F27
#AE3F27
oklch(51.9% 0.15 33.8)
- #007689
#007689
oklch(52% 0.091 214)
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 #AE3F27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.027
- Sinopia #BB3E03 ΔE 0.031
- Brick #A03623 ΔE 0.036
- Burnt Umber #A0450E ΔE 0.037
- Russet #A13905 ΔE 0.037
- Dull Red #BB3F3F ΔE 0.037
- Rust Red #AA2704 ΔE 0.042
- Firebrick #B22222 ΔE 0.042
Use #AE3F27 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.