#A03311
Closest named color: Brick (#A03623). oklch(47.9% 0.15 36.4), rgb(160, 51, 17).
Aa
White text reads best on this color (7.05:1).
About this color
#A03311 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.150 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.013 away. White text reads best on it, at 7.05:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #A03311 |
| RGB | rgb(160, 51, 17) |
| HSL | hsl(14, 81%, 35%) |
| OKLCH | oklch(47.9% 0.15 36.4) |
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 #A03311 | 7.05:1 | AAA | Lc -88.4 | Fine for body text |
| Black text on #A03311 | 2.97:1 | Fails | Lc 20.6 | Dividers and decoration only |
| #A03311 text on white | 7.05:1 | AAA | Lc 83.4 | Fine for body text |
| #A03311 text on black | 2.97:1 | Fails | Lc -18.5 | 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
#F7E5E0
oklch(93.5% 0.021 36)
-
Step 200
200
#F2D0C7
oklch(88.4% 0.04 35.2)
-
Step 300
300
#EBB1A0
oklch(80.9% 0.072 37)
-
Step 400
400
#DF856C
oklch(70.7% 0.117 36.3)
-
Step 500
500
#D36344
oklch(63% 0.149 36.4)
-
Step 600
600
#BF4724
oklch(55.7% 0.162 36.5)
-
Step 700
700 (this color)
#A03311
oklch(47.9% 0.15 36.4)
-
Step 800
800
#852F15
oklch(42.7% 0.124 36.8)
-
Step 900
900
#6B2B19
oklch(37.7% 0.096 36.5)
-
Step 950
950
#3F1A0F
oklch(27% 0.061 37.3)
#A03311 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) | #53490A | 0.154 |
| Deuteranopia (no green cones) | #6E6209 | 0.140 |
| Tritanopia (no blue cones) | #B10D2D | 0.061 |
| Achromatopsia (no color) | #595959 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A03311
#A03311
oklch(47.9% 0.15 36.4)
- #00697C
#00697C
oklch(48% 0.085 215.9)
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 #A03311, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.013
- Russet #A13905 ΔE 0.014
- Rust Red #AA2704 ΔE 0.023
- Burnt Red #9F2305 ΔE 0.025
- Rusty Red #AF2F0D ΔE 0.030
- Brown #A52A2A ΔE 0.031
- Rufous #AE2012 ΔE 0.034
- Brown Red #922B05 ΔE 0.035
Use #A03311 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.