#A1303A
Closest named color: Brown (#A52A2A). oklch(48.2% 0.148 19.8), rgb(161, 48, 58).
Aa
White text reads best on this color (7.00:1).
About this color
#A1303A is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.148 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.019 away. White text reads best on it, at 7.00:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.148) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 2.99:1 |
| White text | 7.00:1 |
Values
| HEX | #A1303A |
| RGB | rgb(161, 48, 58) |
| HSL | hsl(355, 54%, 41%) |
| OKLCH | oklch(48.2% 0.148 19.8) |
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 #A1303A | 7.00:1 | AAA | Lc -88.2 | Fine for body text |
| Black text on #A1303A | 2.99:1 | Fails | Lc 20.8 | Dividers and decoration only |
| #A1303A text on white | 7.00:1 | AAA | Lc 83.2 | Fine for body text |
| #A1303A text on black | 2.99:1 | Fails | Lc -18.7 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F8E5E4
oklch(93.7% 0.021 21.2)
-
Step 200
200
#F3CFCE
oklch(88.5% 0.041 19.8)
-
Step 300
300
#ECAFAE
oklch(81% 0.072 19.8)
-
Step 400
400
#DF8283
oklch(70.7% 0.115 19.7)
-
Step 500
500
#D35F64
oklch(63% 0.147 19.6)
-
Step 600
600
#BF424B
oklch(55.7% 0.16 19.9)
-
Step 700
700 (this color)
#A1303A
oklch(48.2% 0.148 19.8)
-
Step 800
800
#852B32
oklch(42.6% 0.123 19.6)
-
Step 900
900
#6B292C
oklch(37.7% 0.095 20.1)
-
Step 950
950
#3F191A
oklch(27.1% 0.06 20.3)
#A1303A 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) | #4E4A3A | 0.162 |
| Deuteranopia (no green cones) | #6B6237 | 0.149 |
| Tritanopia (no blue cones) | #B11135 | 0.040 |
| Achromatopsia (no color) | #595959 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1303A
#A1303A
oklch(48.2% 0.148 19.8)
- #006C70
#006C70
oklch(48.3% 0.082 199.3)
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 #A1303A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.019
- Auburn #9B2226 ΔE 0.032
- Brick #A03623 ΔE 0.032
- Rouge #AB1239 ΔE 0.036
- Firebrick #B22222 ΔE 0.040
- Rufous #AE2012 ΔE 0.043
- Rust Red #AA2704 ΔE 0.046
- Burnt Red #9F2305 ΔE 0.046
Use #A1303A 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.