#A4331F
Closest named color: Brick (#A03623). oklch(48.7% 0.152 32.4), rgb(164, 51, 31).
Aa
White text reads best on this color (6.83:1).
About this color
#A4331F is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.152 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.008 away. White text reads best on it, at 6.83:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #A4331F |
| RGB | rgb(164, 51, 31) |
| HSL | hsl(9, 68%, 38%) |
| OKLCH | oklch(48.7% 0.152 32.4) |
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 #A4331F | 6.83:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #A4331F | 3.07:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #A4331F text on white | 6.83:1 | AA | Lc 82.5 | Fine for body text |
| #A4331F text on black | 3.07:1 | AA large text | Lc -19.4 | 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
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F3D0C8
oklch(88.5% 0.041 33)
-
Step 300
300
#ECB0A3
oklch(80.9% 0.073 32.5)
-
Step 400
400
#E08471
oklch(70.7% 0.117 32.6)
-
Step 500
500
#D5614B
oklch(63.1% 0.151 32.4)
-
Step 600
600
#C0442E
oklch(55.6% 0.163 32.3)
-
Step 700
700 (this color)
#A4331F
oklch(48.7% 0.152 32.4)
-
Step 800
800
#862D1D
oklch(42.7% 0.125 32.4)
-
Step 900
900
#6C291D
oklch(37.6% 0.099 32.1)
-
Step 950
950
#401912
oklch(27% 0.063 31.8)
#A4331F 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) | #544B1C | 0.159 |
| Deuteranopia (no green cones) | #70641A | 0.145 |
| Tritanopia (no blue cones) | #B50C2F | 0.055 |
| Achromatopsia (no color) | #5B5B5B | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4331F
#A4331F
oklch(48.7% 0.152 32.4)
- #006C7C
#006C7C
oklch(48.8% 0.085 212.4)
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 #A4331F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.008
- Rust Red #AA2704 ΔE 0.020
- Brown #A52A2A ΔE 0.021
- Russet #A13905 ΔE 0.022
- Rusty Red #AF2F0D ΔE 0.023
- Rufous #AE2012 ΔE 0.028
- Burnt Red #9F2305 ΔE 0.030
- Firebrick #B22222 ΔE 0.033
Use #A4331F 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.