#A8311D
Closest named color: Rusty Red (#AF2F0D). oklch(49.2% 0.159 32.1), rgb(168, 49, 29).
Aa
White text reads best on this color (6.72:1).
About this color
#A8311D is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.159 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.016 away. White text reads best on it, at 6.72:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.159) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #A8311D |
| RGB | rgb(168, 49, 29) |
| HSL | hsl(9, 71%, 39%) |
| OKLCH | oklch(49.2% 0.159 32.1) |
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 #A8311D | 6.72:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #A8311D | 3.12:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #A8311D text on white | 6.72:1 | AA | Lc 82.0 | Fine for body text |
| #A8311D text on black | 3.12:1 | AA large text | Lc -19.9 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F4D0C8
oklch(88.6% 0.042 32.6)
-
Step 300
300
#EEAFA2
oklch(80.9% 0.077 31.9)
-
Step 400
400
#E2826F
oklch(70.6% 0.122 32.2)
-
Step 500
500
#D75F49
oklch(63.1% 0.156 32.2)
-
Step 600
600
#C3402A
oklch(55.6% 0.171 32)
-
Step 700
700 (this color)
#A8311D
oklch(49.2% 0.159 32.1)
-
Step 800
800
#882A1A
oklch(42.6% 0.131 32.1)
-
Step 900
900
#6E281C
oklch(37.8% 0.102 31.9)
-
Step 950
950
#411811
oklch(27% 0.066 31.5)
#A8311D 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) | #544B19 | 0.167 |
| Deuteranopia (no green cones) | #726517 | 0.151 |
| Tritanopia (no blue cones) | #B9002E | 0.056 |
| Achromatopsia (no color) | #5C5C5C | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A8311D
#A8311D
oklch(49.2% 0.159 32.1)
- #006D7D
#006D7D
oklch(49.1% 0.086 212.3)
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 #A8311D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.016
- Rust Red #AA2704 ΔE 0.016
- Brick #A03623 ΔE 0.016
- Brown #A52A2A ΔE 0.021
- Rufous #AE2012 ΔE 0.022
- Russet #A13905 ΔE 0.026
- Firebrick #B22222 ΔE 0.027
- Burnt Red #9F2305 ΔE 0.032
Use #A8311D 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.