#AF421B
Closest named color: Sinopia (#BB3E03). oklch(52.4% 0.151 38.5), rgb(175, 66, 27).
Aa
White text reads best on this color (5.80:1).
About this color
#AF421B is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.151 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.024 away. White text reads best on it, at 5.80:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #AF421B |
| RGB | rgb(175, 66, 27) |
| HSL | hsl(16, 73%, 40%) |
| OKLCH | oklch(52.4% 0.151 38.5) |
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 #AF421B | 5.80:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #AF421B | 3.61:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #AF421B text on white | 5.80:1 | AA | Lc 78.2 | Fine for body text |
| #AF421B text on black | 3.61:1 | 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
#FBF3F1
oklch(97% 0.009 34.3)
-
Step 100
100
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#F1D1C7
oklch(88.5% 0.039 38.1)
-
Step 300
300
#E8B2A1
oklch(80.8% 0.068 38.2)
-
Step 400
400
#DB886E
oklch(70.7% 0.109 38.2)
-
Step 500
500
#CE6846
oklch(63.1% 0.138 38.9)
-
Step 600
600 (this color)
#AF421B
oklch(52.4% 0.151 38.5)
-
Step 700
700
#A03C19
oklch(49.1% 0.141 38.4)
-
Step 800
800
#823317
oklch(42.8% 0.116 38.9)
-
Step 900
900
#692D1A
oklch(37.7% 0.091 38)
-
Step 950
950
#3E1B10
oklch(27% 0.058 38.1)
#AF421B 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) | #615614 | 0.151 |
| Deuteranopia (no green cones) | #7C6E16 | 0.136 |
| Tritanopia (no blue cones) | #C1253B | 0.067 |
| Achromatopsia (no color) | #656565 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AF421B
#AF421B
oklch(52.4% 0.151 38.5)
- #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 #AF421B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.024
- Burnt Umber #A0450E ΔE 0.031
- Rusty Red #AF2F0D ΔE 0.032
- Cinnamon #AC4F06 ΔE 0.032
- Russet #A13905 ΔE 0.037
- Sienna #A0522D ΔE 0.039
- Brick Orange #C14A09 ΔE 0.043
- Burnt Siena #B75203 ΔE 0.043
Use #AF421B 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.