#A42C0D
Closest named color: Rust Red (#AA2704). oklch(47.8% 0.161 34.4), rgb(164, 44, 13).
Aa
White text reads best on this color (7.13:1).
About this color
#A42C0D is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.161 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Red (#AA2704), ΔE 0.012 away. White text reads best on it, at 7.13:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.161) |
| Temperature | warm |
| Nearest name | Rust Red (#AA2704) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #A42C0D |
| RGB | rgb(164, 44, 13) |
| HSL | hsl(12, 85%, 35%) |
| OKLCH | oklch(47.8% 0.161 34.4) |
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 #A42C0D | 7.13:1 | AAA | Lc -88.5 | Fine for body text |
| Black text on #A42C0D | 2.94:1 | Fails | Lc 20.6 | Dividers and decoration only |
| #A42C0D text on white | 7.13:1 | AAA | Lc 83.5 | Fine for body text |
| #A42C0D text on black | 2.94:1 | Fails | Lc -18.5 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E0
oklch(93.6% 0.022 35.1)
-
Step 200
200
#F4D0C6
oklch(88.5% 0.043 36)
-
Step 300
300
#EEAF9F
oklch(80.9% 0.078 34.7)
-
Step 400
400
#E3826B
oklch(70.7% 0.125 34.3)
-
Step 500
500
#D85E42
oklch(63% 0.16 34.3)
-
Step 600
600
#C34021
oklch(55.5% 0.173 34.4)
-
Step 700
700 (this color)
#A42C0D
oklch(47.8% 0.161 34.4)
-
Step 800
800
#892A13
oklch(42.8% 0.134 34.5)
-
Step 900
900
#6E2818
oklch(37.7% 0.103 34.3)
-
Step 950
950
#41180F
oklch(27% 0.066 33.9)
#A42C0D 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) | #514705 | 0.168 |
| Deuteranopia (no green cones) | #6E6202 | 0.153 |
| Tritanopia (no blue cones) | #B50027 | 0.053 |
| Achromatopsia (no color) | #585858 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A42C0D
#A42C0D
oklch(47.8% 0.161 34.4)
- #00697A
#00697A
oklch(47.9% 0.084 213.9)
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 #A42C0D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Red #AA2704 ΔE 0.012
- Burnt Red #9F2305 ΔE 0.019
- Brick #A03623 ΔE 0.019
- Rufous #AE2012 ΔE 0.023
- Russet #A13905 ΔE 0.024
- Rusty Red #AF2F0D ΔE 0.024
- Brown #A52A2A ΔE 0.025
- Firebrick #B22222 ΔE 0.035
Use #A42C0D 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.