#A51857
Closest named color: Violet Red (#A50055). oklch(47.7% 0.178 0.9), rgb(165, 24, 87).
Aa
White text reads best on this color (7.32:1).
About this color
#A51857 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.178 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Violet Red (#A50055), ΔE 0.015 away. White text reads best on it, at 7.32:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Violet Red (#A50055) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #A51857 |
| RGB | rgb(165, 24, 87) |
| HSL | hsl(333, 75%, 37%) |
| OKLCH | oklch(47.7% 0.178 0.9) |
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 #A51857 | 7.32:1 | AAA | Lc -88.7 | Fine for body text |
| Black text on #A51857 | 2.86:1 | Fails | Lc 20.3 | Dividers and decoration only |
| #A51857 text on white | 7.32:1 | AAA | Lc 83.8 | Fine for body text |
| #A51857 text on black | 2.86:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3E9
oklch(93.5% 0.025 359.2)
-
Step 200
200
#F5CDD7
oklch(88.5% 0.047 1.3)
-
Step 300
300
#F0AABD
oklch(81% 0.085 1.4)
-
Step 400
400
#E5799C
oklch(70.7% 0.138 0.6)
-
Step 500
500
#DA5183
oklch(63.1% 0.177 1)
-
Step 600
600
#C52E6D
oklch(55.6% 0.192 0.7)
-
Step 700
700 (this color)
#A51857
oklch(47.7% 0.178 0.9)
-
Step 800
800
#8A1D4A
oklch(42.7% 0.148 1.1)
-
Step 900
900
#6F203E
oklch(37.7% 0.114 1)
-
Step 950
950
#411424
oklch(26.9% 0.072 1.1)
#A51857 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) | #3D4558 | 0.203 |
| Deuteranopia (no green cones) | #636054 | 0.181 |
| Tritanopia (no blue cones) | #B40036 | 0.056 |
| Achromatopsia (no color) | #565656 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A51857
#A51857
oklch(47.7% 0.178 0.9)
- #006C5F
#006C5F
oklch(47.6% 0.086 180.7)
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 #A51857, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Red #A50055 ΔE 0.015
- Deep Magenta #A0025C ΔE 0.025
- Dark Fuchsia #9D0759 ΔE 0.026
- Raspberry #B00149 ΔE 0.030
- Berry #990F4B ΔE 0.032
- Purple Red #990147 ΔE 0.038
- Red Violet #9E0168 ΔE 0.042
- Cranberry #9E003A ΔE 0.045
Use #A51857 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.