#A31057
Closest named color: Violet Red (#A50055). oklch(47% 0.182 359.7), rgb(163, 16, 87).
Aa
White text reads best on this color (7.58:1).
About this color
#A31057 is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.182 and its hue 360°. Its hue sits on the warm side of the wheel. The nearest named color is Violet Red (#A50055), ΔE 0.008 away. White text reads best on it, at 7.58:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.182) |
| Temperature | warm |
| Nearest name | Violet Red (#A50055) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #A31057 |
| RGB | rgb(163, 16, 87) |
| HSL | hsl(331, 82%, 35%) |
| OKLCH | oklch(47% 0.182 359.7) |
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 #A31057 | 7.58:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #A31057 | 2.76:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #A31057 text on white | 7.58:1 | AAA | Lc 84.5 | Fine for body text |
| #A31057 text on black | 2.76:1 | Fails | Lc -17.5 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3E9
oklch(93.5% 0.025 359.2)
-
Step 200
200
#F6CCD8
oklch(88.5% 0.05 359.1)
-
Step 300
300
#F1A9BE
oklch(80.9% 0.088 0.2)
-
Step 400
400
#E6789D
oklch(70.7% 0.141 360)
-
Step 500
500
#DB5086
oklch(63.2% 0.18 359.6)
-
Step 600
600
#C62C6F
oklch(55.6% 0.195 359.9)
-
Step 700
700 (this color)
#A31057
oklch(47% 0.182 359.7)
-
Step 800
800
#8A1B4C
oklch(42.6% 0.15 359.5)
-
Step 900
900
#6F1F3F
oklch(37.7% 0.116 359.9)
-
Step 950
950
#421325
oklch(27% 0.075 359.7)
#A31057 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) | #3A4358 | 0.206 |
| Deuteranopia (no green cones) | #605D54 | 0.183 |
| Tritanopia (no blue cones) | #B10034 | 0.059 |
| Achromatopsia (no color) | #545454 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A31057
#A31057
oklch(47% 0.182 359.7)
- #006A5C
#006A5C
oklch(47% 0.085 179.5)
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 #A31057, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Red #A50055 ΔE 0.008
- Deep Magenta #A0025C ΔE 0.016
- Dark Fuchsia #9D0759 ΔE 0.017
- Berry #990F4B ΔE 0.027
- Purple Red #990147 ΔE 0.033
- Raspberry #B00149 ΔE 0.035
- Red Violet #9E0168 ΔE 0.036
- Mulberry #920A4E ΔE 0.039
Use #A31057 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.