#A4240F
Closest named color: Burnt Red (#9F2305). oklch(47.1% 0.167 31.9), rgb(164, 36, 15).
Aa
White text reads best on this color (7.40:1).
About this color
#A4240F is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.167 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Red (#9F2305), ΔE 0.012 away. White text reads best on it, at 7.40:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.167) |
| Temperature | warm |
| Nearest name | Burnt Red (#9F2305) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #A4240F |
| RGB | rgb(164, 36, 15) |
| HSL | hsl(8, 83%, 35%) |
| OKLCH | oklch(47.1% 0.167 31.9) |
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 #A4240F | 7.40:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #A4240F | 2.83:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #A4240F text on white | 7.40:1 | AAA | Lc 84.2 | Fine for body text |
| #A4240F text on black | 2.83:1 | Fails | Lc -17.8 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E0
oklch(93.7% 0.023 34.3)
-
Step 200
200
#F5CFC7
oklch(88.5% 0.044 31.9)
-
Step 300
300
#F0AEA0
oklch(80.9% 0.081 32.3)
-
Step 400
400
#E6806D
oklch(70.8% 0.13 31.6)
-
Step 500
500
#DB5B45
oklch(63.1% 0.165 31.8)
-
Step 600
600
#C63B25
oklch(55.5% 0.179 31.8)
-
Step 700
700 (this color)
#A4240F
oklch(47.1% 0.167 31.9)
-
Step 800
800
#8B2616
oklch(42.7% 0.139 31.8)
-
Step 900
900
#702619
oklch(37.8% 0.108 32.2)
-
Step 950
950
#421710
oklch(27% 0.069 31.3)
#A4240F 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) | #4D4309 | 0.178 |
| Deuteranopia (no green cones) | #6C6003 | 0.161 |
| Tritanopia (no blue cones) | #B50021 | 0.043 |
| Achromatopsia (no color) | #555555 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4240F
#A4240F
oklch(47.1% 0.167 31.9)
- #006776
#006776
oklch(47.2% 0.082 212)
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 #A4240F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Red #9F2305 ΔE 0.012
- Rust Red #AA2704 ΔE 0.015
- Rufous #AE2012 ΔE 0.020
- Brown #A52A2A ΔE 0.022
- Brick #A03623 ΔE 0.026
- Auburn #9B2226 ΔE 0.028
- Rusty Red #AF2F0D ΔE 0.031
- Firebrick #B22222 ΔE 0.033
Use #A4240F 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.