#A31B72
Closest named color: Red Violet (#9E0168). oklch(48.6% 0.186 347.6), rgb(163, 27, 114).
Aa
White text reads best on this color (7.10:1).
About this color
#A31B72 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.186 and its hue 348°. Its hue sits on the warm side of the wheel. The nearest named color is Red Violet (#9E0168), ΔE 0.026 away. White text reads best on it, at 7.10:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.186) |
| Temperature | warm |
| Nearest name | Red Violet (#9E0168) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #A31B72 |
| RGB | rgb(163, 27, 114) |
| HSL | hsl(322, 72%, 37%) |
| OKLCH | oklch(48.6% 0.186 347.6) |
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 #A31B72 | 7.10:1 | AAA | Lc -88.1 | Fine for body text |
| Black text on #A31B72 | 2.95:1 | Fails | Lc 21.0 | Dividers and decoration only |
| #A31B72 text on white | 7.10:1 | AAA | Lc 83.1 | Fine for body text |
| #A31B72 text on black | 2.95:1 | Fails | Lc -18.9 | 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
#FCF2F7
oklch(97% 0.013 345.5)
-
Step 100
100
#F8E3ED
oklch(93.6% 0.026 347.1)
-
Step 200
200
#F3CCDF
oklch(88.4% 0.05 347.3)
-
Step 300
300
#EDA9CB
oklch(80.9% 0.09 347.9)
-
Step 400
400
#E078B1
oklch(70.6% 0.145 347.4)
-
Step 500
500
#D4519E
oklch(63.1% 0.183 347.3)
-
Step 600
600
#C02D88
oklch(55.6% 0.201 347.8)
-
Step 700
700 (this color)
#A31B72
oklch(48.6% 0.186 347.6)
-
Step 800
800
#861C5E
oklch(42.7% 0.155 347.6)
-
Step 900
900
#6C1F4D
oklch(37.7% 0.12 347.6)
-
Step 950
950
#40142D
oklch(27.1% 0.076 348.2)
#A31B72 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) | #334974 | 0.210 |
| Deuteranopia (no green cones) | #5B606F | 0.182 |
| Tritanopia (no blue cones) | #AF1346 | 0.074 |
| Achromatopsia (no color) | #585858 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A31B72
#A31B72
oklch(48.6% 0.186 347.6)
- #007154
#007154
oklch(48.7% 0.099 167.4)
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 #A31B72, closest first.
No curated palette has a color within ΔE 0.04 of #A31B72.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Violet #9E0168 ΔE 0.026
- Deep Magenta #A0025C ΔE 0.036
- Dark Fuchsia #9D0759 ΔE 0.042
- Violet Red #A50055 ΔE 0.046
- Warm Purple #952E8F ΔE 0.056
- Berry #990F4B ΔE 0.064
- Mulberry #920A4E ΔE 0.066
- Raspberry #B00149 ΔE 0.069
Use #A31B72 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.