#A33D3B
Closest named color: Brick (#A03623). oklch(50.2% 0.136 24.4), rgb(163, 61, 59).
Aa
White text reads best on this color (6.38:1).
About this color
#A33D3B is a medium-dark, moderately saturated red. In OKLCH its lightness is 50%, its chroma 0.136 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.028 away. White text reads best on it, at 6.38:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.136) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 3.28:1 |
| White text | 6.38:1 |
Values
| HEX | #A33D3B |
| RGB | rgb(163, 61, 59) |
| HSL | hsl(1, 47%, 44%) |
| OKLCH | oklch(50.2% 0.136 24.4) |
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 #A33D3B | 6.38:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #A33D3B | 3.28:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #A33D3B text on white | 6.38:1 | AA | Lc 81.0 | Fine for body text |
| #A33D3B text on black | 3.28:1 | AA large text | Lc -20.9 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E5E4
oklch(93.5% 0.019 21.6)
-
Step 200
200
#F1D0CD
oklch(88.5% 0.037 24)
-
Step 300
300
#E8B1AC
oklch(80.9% 0.065 24.5)
-
Step 400
400
#DB8680
oklch(70.8% 0.106 24.4)
-
Step 500
500
#CE6560
oklch(63.1% 0.134 24.4)
-
Step 600
600
#B94947
oklch(55.5% 0.146 24.1)
-
Step 700
700 (this color)
#A33D3B
oklch(50.2% 0.136 24.4)
-
Step 800
800
#82312F
oklch(42.8% 0.113 24.5)
-
Step 900
900
#682C2A
oklch(37.6% 0.087 24)
-
Step 950
950
#3D1A19
oklch(26.9% 0.055 23.1)
#A33D3B 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) | #57513A | 0.145 |
| Deuteranopia (no green cones) | #716738 | 0.133 |
| Tritanopia (no blue cones) | #B3283D | 0.042 |
| Achromatopsia (no color) | #5F5F5F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A33D3B
#A33D3B
oklch(50.2% 0.136 24.4)
- #00717A
#00717A
oklch(50% 0.085 204.5)
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 #A33D3B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.028
- Brown #A52A2A ΔE 0.032
- Light Maroon #A24857 ΔE 0.038
- Rusty Red #AF2F0D ΔE 0.043
- Russet #A13905 ΔE 0.044
- Firebrick #B22222 ΔE 0.045
- Light Burgundy #A8415B ΔE 0.045
- Rust Red #AA2704 ΔE 0.047
Use #A33D3B 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.