#A31B5E
Closest named color: Violet Red (#A50055). oklch(47.8% 0.177 357.2), rgb(163, 27, 94).
Aa
White text reads best on this color (7.30:1).
About this color
#A31B5E is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.177 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Violet Red (#A50055), ΔE 0.019 away. White text reads best on it, at 7.30:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Violet Red (#A50055) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #A31B5E |
| RGB | rgb(163, 27, 94) |
| HSL | hsl(330, 72%, 37%) |
| OKLCH | oklch(47.8% 0.177 357.2) |
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 #A31B5E | 7.30:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #A31B5E | 2.87:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #A31B5E text on white | 7.30:1 | AAA | Lc 83.8 | Fine for body text |
| #A31B5E text on black | 2.87:1 | Fails | Lc -18.2 | 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
#FCF2F5
oklch(97% 0.011 357)
-
Step 100
100
#F9E3EA
oklch(93.6% 0.026 356.3)
-
Step 200
200
#F5CDD9
oklch(88.6% 0.048 358.2)
-
Step 300
300
#EFAAC1
oklch(81% 0.086 357.5)
-
Step 400
400
#E37AA1
oklch(70.8% 0.136 357.6)
-
Step 500
500
#D8538B
oklch(63.2% 0.175 357.2)
-
Step 600
600
#C33074
oklch(55.6% 0.191 357.4)
-
Step 700
700 (this color)
#A31B5E
oklch(47.8% 0.177 357.2)
-
Step 800
800
#881F50
oklch(42.7% 0.146 357.1)
-
Step 900
900
#6E2042
oklch(37.7% 0.115 357.3)
-
Step 950
950
#411427
oklch(27% 0.073 356.9)
#A31B5E 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) | #3B4660 | 0.201 |
| Deuteranopia (no green cones) | #615F5B | 0.177 |
| Tritanopia (no blue cones) | #B1003B | 0.058 |
| Achromatopsia (no color) | #565656 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A31B5E
#A31B5E
oklch(47.8% 0.177 357.2)
- #006D5C
#006D5C
oklch(47.8% 0.089 176.9)
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 #A31B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Red #A50055 ΔE 0.019
- Deep Magenta #A0025C ΔE 0.020
- Dark Fuchsia #9D0759 ΔE 0.023
- Red Violet #9E0168 ΔE 0.033
- Berry #990F4B ΔE 0.036
- Raspberry #B00149 ΔE 0.041
- Purple Red #990147 ΔE 0.043
- Mulberry #920A4E ΔE 0.047
Use #A31B5E 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.