#A42518
Closest named color: Burnt Red (#9F2305). oklch(47.2% 0.165 30.1), rgb(164, 37, 24).
Aa
White text reads best on this color (7.35:1).
About this color
#A42518 is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.165 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Red (#9F2305), ΔE 0.016 away. White text reads best on it, at 7.35:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.165) |
| Temperature | warm |
| Nearest name | Burnt Red (#9F2305) |
| Black text | 2.85:1 |
| White text | 7.35:1 |
Values
| HEX | #A42518 |
| RGB | rgb(164, 37, 24) |
| HSL | hsl(6, 74%, 37%) |
| OKLCH | oklch(47.2% 0.165 30.1) |
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 #A42518 | 7.35:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #A42518 | 2.85:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #A42518 text on white | 7.35:1 | AAA | Lc 84.1 | Fine for body text |
| #A42518 text on black | 2.85:1 | Fails | Lc -17.9 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F5CFC8
oklch(88.5% 0.044 30.2)
-
Step 300
300
#F0AEA2
oklch(81% 0.08 30.5)
-
Step 400
400
#E58070
oklch(70.7% 0.128 30.1)
-
Step 500
500
#DA5B4A
oklch(63% 0.163 30)
-
Step 600
600
#C63C2C
oklch(55.7% 0.177 30.2)
-
Step 700
700 (this color)
#A42518
oklch(47.2% 0.165 30.1)
-
Step 800
800
#8A271B
oklch(42.7% 0.136 30.4)
-
Step 900
900
#6F261C
oklch(37.7% 0.106 30.5)
-
Step 950
950
#421711
oklch(27% 0.068 30.2)
#A42518 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) | #4D4415 | 0.176 |
| Deuteranopia (no green cones) | #6C6010 | 0.160 |
| Tritanopia (no blue cones) | #B50024 | 0.042 |
| Achromatopsia (no color) | #565656 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A42518
#A42518
oklch(47.2% 0.165 30.1)
- #006775
#006775
oklch(47.1% 0.082 210.9)
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 #A42518, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Red #9F2305 ΔE 0.016
- Brown #A52A2A ΔE 0.016
- Rust Red #AA2704 ΔE 0.017
- Rufous #AE2012 ΔE 0.020
- Brick #A03623 ΔE 0.025
- Auburn #9B2226 ΔE 0.025
- Firebrick #B22222 ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.032
Use #A42518 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.