#A42D33
Closest named color: Brown (#A52A2A). oklch(48.3% 0.155 22.5), rgb(164, 45, 51).
Aa
White text reads best on this color (6.99:1).
About this color
#A42D33 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.155 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.010 away. White text reads best on it, at 6.99:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.155) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #A42D33 |
| RGB | rgb(164, 45, 51) |
| HSL | hsl(357, 57%, 41%) |
| OKLCH | oklch(48.3% 0.155 22.5) |
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 #A42D33 | 6.99:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #A42D33 | 3.00:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #A42D33 text on white | 6.99:1 | AA | Lc 83.1 | Fine for body text |
| #A42D33 text on black | 3.00:1 | AA large text | Lc -18.9 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F4CFCD
oklch(88.5% 0.042 21.6)
-
Step 300
300
#EDAEAA
oklch(80.8% 0.075 23)
-
Step 400
400
#E2817E
oklch(70.8% 0.12 22.4)
-
Step 500
500
#D65D5D
oklch(63% 0.153 22.5)
-
Step 600
600
#C23F43
oklch(55.7% 0.167 22.7)
-
Step 700
700 (this color)
#A42D33
oklch(48.3% 0.155 22.5)
-
Step 800
800
#87292C
oklch(42.6% 0.128 22.7)
-
Step 900
900
#6D2728
oklch(37.7% 0.1 22.4)
-
Step 950
950
#401818
oklch(27% 0.063 22.2)
#A42D33 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) | #4F4932 | 0.168 |
| Deuteranopia (no green cones) | #6C622F | 0.154 |
| Tritanopia (no blue cones) | #B40130 | 0.042 |
| Achromatopsia (no color) | #595959 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A42D33
#A42D33
oklch(48.3% 0.155 22.5)
- #006C73
#006C73
oklch(48.4% 0.082 202.6)
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 #A42D33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.010
- Brick #A03623 ΔE 0.028
- Auburn #9B2226 ΔE 0.029
- Firebrick #B22222 ΔE 0.031
- Rufous #AE2012 ΔE 0.033
- Rouge #AB1239 ΔE 0.034
- Rust Red #AA2704 ΔE 0.036
- Burnt Red #9F2305 ΔE 0.039
Use #A42D33 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.