#A33D21
Closest named color: Brick (#A03623). oklch(49.8% 0.141 36), rgb(163, 61, 33).
Aa
White text reads best on this color (6.46:1).
About this color
#A33D21 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.141 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.017 away. White text reads best on it, at 6.46:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 3.24:1 |
| White text | 6.46:1 |
Values
| HEX | #A33D21 |
| RGB | rgb(163, 61, 33) |
| HSL | hsl(13, 66%, 38%) |
| OKLCH | oklch(49.8% 0.141 36) |
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 #A33D21 | 6.46:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #A33D21 | 3.24:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #A33D21 text on white | 6.46:1 | AA | Lc 81.3 | Fine for body text |
| #A33D21 text on black | 3.24:1 | AA large text | Lc -20.6 | 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 700.
-
Step 50
50
#FBF3F1
oklch(97% 0.009 34.3)
-
Step 100
100
#F7E6E1
oklch(93.7% 0.02 37)
-
Step 200
200
#F1D1C8
oklch(88.5% 0.038 36.2)
-
Step 300
300
#E9B2A2
oklch(81% 0.068 36.8)
-
Step 400
400
#DB8770
oklch(70.6% 0.109 36.1)
-
Step 500
500
#CF664A
oklch(63% 0.14 35.9)
-
Step 600
600
#BB4B2C
oklch(55.7% 0.152 36.2)
-
Step 700
700 (this color)
#A33D21
oklch(49.8% 0.141 36)
-
Step 800
800
#82321C
oklch(42.7% 0.116 36.1)
-
Step 900
900
#692D1C
oklch(37.7% 0.091 36.7)
-
Step 950
950
#3E1B11
oklch(27% 0.058 36.8)
#A33D21 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) | #5A501D | 0.142 |
| Deuteranopia (no green cones) | #73671D | 0.131 |
| Tritanopia (no blue cones) | #B32337 | 0.058 |
| Achromatopsia (no color) | #5E5E5E | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A33D21
#A33D21
oklch(49.8% 0.141 36)
- #006F83
#006F83
oklch(49.9% 0.089 216)
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 #A33D21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.017
- Russet #A13905 ΔE 0.017
- Burnt Umber #A0450E ΔE 0.024
- Rusty Red #AF2F0D ΔE 0.029
- Rust Red #AA2704 ΔE 0.034
- Brown #A52A2A ΔE 0.037
- Rufous #AE2012 ΔE 0.043
- Sienna #A0522D ΔE 0.043
Use #A33D21 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.