#A5182F
Closest named color: Rouge (#AB1239). oklch(46.7% 0.173 19.8), rgb(165, 24, 47).
Aa
White text reads best on this color (7.57:1).
About this color
#A5182F is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.173 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.019 away. White text reads best on it, at 7.57:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #A5182F |
| RGB | rgb(165, 24, 47) |
| HSL | hsl(350, 75%, 37%) |
| OKLCH | oklch(46.7% 0.173 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 #A5182F | 7.57:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #A5182F | 2.77:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #A5182F text on white | 7.57:1 | AAA | Lc 84.6 | Fine for body text |
| #A5182F text on black | 2.77:1 | Fails | Lc -17.4 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F7CECD
oklch(88.6% 0.046 19.7)
-
Step 300
300
#F2ABAA
oklch(80.8% 0.084 20)
-
Step 400
400
#E87C7E
oklch(70.8% 0.133 19.9)
-
Step 500
500
#DE555D
oklch(63.2% 0.171 20)
-
Step 600
600
#C93244
oklch(55.6% 0.186 19.6)
-
Step 700
700 (this color)
#A5182F
oklch(46.7% 0.173 19.8)
-
Step 800
800
#8D202D
oklch(42.8% 0.144 19.6)
-
Step 900
900
#712228
oklch(37.7% 0.111 20)
-
Step 950
950
#431518
oklch(27.1% 0.071 19.4)
#A5182F 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) | #46412F | 0.191 |
| Deuteranopia (no green cones) | #685E2A | 0.175 |
| Tritanopia (no blue cones) | #B60023 | 0.035 |
| Achromatopsia (no color) | #545454 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A5182F
#A5182F
oklch(46.7% 0.173 19.8)
- #00676B
#00676B
oklch(46.7% 0.079 199.5)
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 #A5182F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.019
- Auburn #9B2226 ΔE 0.025
- Brown #A52A2A ΔE 0.025
- Carmine #9D0216 ΔE 0.033
- Cranberry #9E003A ΔE 0.033
- Firebrick #B22222 ΔE 0.037
- Rufous #AE2012 ΔE 0.038
- Burnt Red #9F2305 ΔE 0.042
Use #A5182F 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.