#A42427
Closest named color: Brown (#A52A2A). oklch(47.3% 0.164 25.1), rgb(164, 36, 39).
Aa
White text reads best on this color (7.34:1).
About this color
#A42427 is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.164 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.009 away. White text reads best on it, at 7.34:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 2.86:1 |
| White text | 7.34:1 |
Values
| HEX | #A42427 |
| RGB | rgb(164, 36, 39) |
| HSL | hsl(359, 64%, 39%) |
| OKLCH | oklch(47.3% 0.164 25.1) |
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 #A42427 | 7.34:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #A42427 | 2.86:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #A42427 text on white | 7.34:1 | AAA | Lc 84.1 | Fine for body text |
| #A42427 text on black | 2.86:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E2
oklch(93.5% 0.023 24.1)
-
Step 200
200
#F5CFCB
oklch(88.6% 0.043 25.1)
-
Step 300
300
#F0ADA7
oklch(80.9% 0.08 24.7)
-
Step 400
400
#E57F78
oklch(70.7% 0.127 24.9)
-
Step 500
500
#DA5A55
oklch(63.1% 0.162 25.1)
-
Step 600
600
#C63A3A
oklch(55.7% 0.177 25)
-
Step 700
700 (this color)
#A42427
oklch(47.3% 0.164 25.1)
-
Step 800
800
#8A2625
oklch(42.7% 0.135 25.5)
-
Step 900
900
#6F2523
oklch(37.7% 0.106 25.1)
-
Step 950
950
#421715
oklch(27.1% 0.067 25.3)
#A42427 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) | #4B4426 | 0.178 |
| Deuteranopia (no green cones) | #6B6022 | 0.163 |
| Tritanopia (no blue cones) | #B50027 | 0.037 |
| Achromatopsia (no color) | #565656 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A42427
#A42427
oklch(47.3% 0.164 25.1)
- #006871
#006871
oklch(47.2% 0.081 205.2)
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 #A42427, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.009
- Auburn #9B2226 ΔE 0.020
- Rufous #AE2012 ΔE 0.025
- Burnt Red #9F2305 ΔE 0.027
- Firebrick #B22222 ΔE 0.029
- Rust Red #AA2704 ΔE 0.029
- Brick #A03623 ΔE 0.030
- Rouge #AB1239 ΔE 0.034
Use #A42427 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.