#A5303A
Closest named color: Brown (#A52A2A). oklch(48.9% 0.152 20.2), rgb(165, 48, 58).
Aa
White text reads best on this color (6.80:1).
About this color
#A5303A is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.152 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.018 away. White text reads best on it, at 6.80:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #A5303A |
| RGB | rgb(165, 48, 58) |
| HSL | hsl(355, 55%, 42%) |
| OKLCH | oklch(48.9% 0.152 20.2) |
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 #A5303A | 6.80:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #A5303A | 3.08:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #A5303A text on white | 6.80:1 | AA | Lc 82.4 | Fine for body text |
| #A5303A text on black | 3.08:1 | AA large text | Lc -19.5 | 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
#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
#EDAEAD
oklch(80.9% 0.074 19.9)
-
Step 400
400
#E18182
oklch(70.7% 0.119 19.8)
-
Step 500
500
#D55E62
oklch(63.1% 0.15 20.4)
-
Step 600
600
#C04049
oklch(55.6% 0.163 20.3)
-
Step 700
700 (this color)
#A5303A
oklch(48.9% 0.152 20.2)
-
Step 800
800
#862A31
oklch(42.6% 0.125 19.9)
-
Step 900
900
#6C272B
oklch(37.6% 0.099 19.7)
-
Step 950
950
#401819
oklch(27% 0.063 20.7)
#A5303A 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) | #504B3A | 0.166 |
| Deuteranopia (no green cones) | #6D6437 | 0.153 |
| Tritanopia (no blue cones) | #B50E35 | 0.040 |
| Achromatopsia (no color) | #5B5B5B | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A5303A
#A5303A
oklch(48.9% 0.152 20.2)
- #006E73
#006E73
oklch(48.9% 0.083 200.3)
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 #A5303A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.018
- Brick #A03623 ΔE 0.033
- Firebrick #B22222 ΔE 0.034
- Rouge #AB1239 ΔE 0.034
- Auburn #9B2226 ΔE 0.037
- Rufous #AE2012 ΔE 0.039
- Rust Red #AA2704 ΔE 0.043
- Rusty Red #AF2F0D ΔE 0.045
Use #A5303A 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.