#A33033
Closest named color: Brown (#A52A2A). oklch(48.5% 0.151 23.4), rgb(163, 48, 51).
Aa
White text reads best on this color (6.93:1).
About this color
#A33033 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.151 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.011 away. White text reads best on it, at 6.93:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #A33033 |
| RGB | rgb(163, 48, 51) |
| HSL | hsl(358, 55%, 41%) |
| OKLCH | oklch(48.5% 0.151 23.4) |
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 #A33033 | 6.93:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #A33033 | 3.02:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #A33033 text on white | 6.93:1 | AA | Lc 82.9 | Fine for body text |
| #A33033 text on black | 3.02:1 | AA large text | Lc -19.0 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F3CFCC
oklch(88.4% 0.041 23.6)
-
Step 300
300
#ECAFAA
oklch(80.9% 0.072 24.1)
-
Step 400
400
#E0827D
oklch(70.7% 0.117 23.7)
-
Step 500
500
#D55F5D
oklch(63.2% 0.15 23.3)
-
Step 600
600
#C04243
oklch(55.7% 0.162 23.6)
-
Step 700
700 (this color)
#A33033
oklch(48.5% 0.151 23.4)
-
Step 800
800
#862B2C
oklch(42.7% 0.125 23.5)
-
Step 900
900
#6C2828
oklch(37.7% 0.098 23)
-
Step 950
950
#401818
oklch(27% 0.063 22.2)
#A33033 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) | #504A32 | 0.163 |
| Deuteranopia (no green cones) | #6D6330 | 0.150 |
| Tritanopia (no blue cones) | #B30C32 | 0.043 |
| Achromatopsia (no color) | #5A5A5A | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A33033
#A33033
oklch(48.5% 0.151 23.4)
- #006C74
#006C74
oklch(48.4% 0.083 203.8)
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 #A33033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.011
- Brick #A03623 ΔE 0.024
- Auburn #9B2226 ΔE 0.031
- Firebrick #B22222 ΔE 0.033
- Rufous #AE2012 ΔE 0.034
- Rust Red #AA2704 ΔE 0.036
- Rouge #AB1239 ΔE 0.039
- Burnt Red #9F2305 ΔE 0.039
Use #A33033 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.