#A63D2B
Closest named color: Brick (#A03623). oklch(50.4% 0.142 32), rgb(166, 61, 43).
Aa
White text reads best on this color (6.31:1).
About this color
#A63D2B is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.142 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.020 away. White text reads best on it, at 6.31:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.142) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 3.32:1 |
| White text | 6.31:1 |
Values
| HEX | #A63D2B |
| RGB | rgb(166, 61, 43) |
| HSL | hsl(9, 59%, 41%) |
| OKLCH | oklch(50.4% 0.142 32) |
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 #A63D2B | 6.31:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #A63D2B | 3.32:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #A63D2B text on white | 6.31:1 | AA | Lc 80.6 | Fine for body text |
| #A63D2B text on black | 3.32:1 | AA large text | Lc -21.2 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F7E5E2
oklch(93.5% 0.02 28.9)
-
Step 200
200
#F1D1CA
oklch(88.6% 0.037 32.4)
-
Step 300
300
#EAB1A5
oklch(81% 0.069 32.1)
-
Step 400
400
#DC8675
oklch(70.7% 0.109 32)
-
Step 500
500
#D16551
oklch(63.2% 0.141 32)
-
Step 600
600
#BC4935
oklch(55.7% 0.153 32)
-
Step 700
700 (this color)
#A63D2B
oklch(50.4% 0.142 32)
-
Step 800
800
#833022
oklch(42.7% 0.118 31.8)
-
Step 900
900
#6A2C20
oklch(37.8% 0.092 32.6)
-
Step 950
950
#3E1A14
oklch(26.9% 0.058 31)
#A63D2B 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) | #5A5128 | 0.147 |
| Deuteranopia (no green cones) | #746828 | 0.134 |
| Tritanopia (no blue cones) | #B72339 | 0.053 |
| Achromatopsia (no color) | #606060 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A63D2B
#A63D2B
oklch(50.4% 0.142 32)
- #007181
#007181
oklch(50.3% 0.088 211.7)
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 #A63D2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.020
- Russet #A13905 ΔE 0.028
- Rusty Red #AF2F0D ΔE 0.028
- Burnt Umber #A0450E ΔE 0.034
- Brown #A52A2A ΔE 0.034
- Rust Red #AA2704 ΔE 0.036
- Firebrick #B22222 ΔE 0.041
- Rufous #AE2012 ΔE 0.041
Use #A63D2B 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.