#A42B1A
Closest named color: Rust Red (#AA2704). oklch(47.8% 0.16 31.2), rgb(164, 43, 26).
Aa
White text reads best on this color (7.14:1).
About this color
#A42B1A is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.160 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Red (#AA2704), ΔE 0.015 away. White text reads best on it, at 7.14:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.160) |
| Temperature | warm |
| Nearest name | Rust Red (#AA2704) |
| Black text | 2.93:1 |
| White text | 7.14:1 |
Values
| HEX | #A42B1A |
| RGB | rgb(164, 43, 26) |
| HSL | hsl(7, 73%, 37%) |
| OKLCH | oklch(47.8% 0.16 31.2) |
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 #A42B1A | 7.14:1 | AAA | Lc -88.5 | Fine for body text |
| Black text on #A42B1A | 2.93:1 | Fails | Lc 20.5 | Dividers and decoration only |
| #A42B1A text on white | 7.14:1 | AAA | Lc 83.5 | Fine for body text |
| #A42B1A text on black | 2.93:1 | Fails | Lc -18.4 | 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
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F4CFC8
oklch(88.4% 0.043 30.5)
-
Step 300
300
#EEAFA2
oklch(80.9% 0.077 31.9)
-
Step 400
400
#E38170
oklch(70.6% 0.124 30.8)
-
Step 500
500
#D85E4A
oklch(63.1% 0.158 31.3)
-
Step 600
600
#C43F2C
oklch(55.7% 0.173 31.1)
-
Step 700
700 (this color)
#A42B1A
oklch(47.8% 0.16 31.2)
-
Step 800
800
#89291B
oklch(42.7% 0.133 31.2)
-
Step 900
900
#6E271C
oklch(37.6% 0.104 31.2)
-
Step 950
950
#411811
oklch(27% 0.066 31.5)
#A42B1A 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) | #504716 | 0.169 |
| Deuteranopia (no green cones) | #6E6113 | 0.153 |
| Tritanopia (no blue cones) | #B50028 | 0.048 |
| Achromatopsia (no color) | #585858 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A42B1A
#A42B1A
oklch(47.8% 0.16 31.2)
- #006978
#006978
oklch(47.8% 0.083 211.7)
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 #A42B1A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Red #AA2704 ΔE 0.015
- Brown #A52A2A ΔE 0.016
- Brick #A03623 ΔE 0.017
- Burnt Red #9F2305 ΔE 0.019
- Rufous #AE2012 ΔE 0.021
- Rusty Red #AF2F0D ΔE 0.027
- Russet #A13905 ΔE 0.030
- Auburn #9B2226 ΔE 0.030
Use #A42B1A 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.