#A21755
Closest named color: Violet Red (#A50055). oklch(47% 0.176 1), rgb(162, 23, 85).
Aa
White text reads best on this color (7.52:1).
About this color
#A21755 is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.176 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Violet Red (#A50055), ΔE 0.014 away. White text reads best on it, at 7.52:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.176) |
| Temperature | warm |
| Nearest name | Violet Red (#A50055) |
| Black text | 2.79:1 |
| White text | 7.52:1 |
Values
| HEX | #A21755 |
| RGB | rgb(162, 23, 85) |
| HSL | hsl(333, 75%, 36%) |
| OKLCH | oklch(47% 0.176 1) |
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 #A21755 | 7.52:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #A21755 | 2.79:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #A21755 text on white | 7.52:1 | AAA | Lc 84.5 | Fine for body text |
| #A21755 text on black | 2.79:1 | 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
#F5CDD7
oklch(88.5% 0.047 1.3)
-
Step 300
300
#F0AABD
oklch(81% 0.085 1.4)
-
Step 400
400
#E47A9B
oklch(70.7% 0.135 1.3)
-
Step 500
500
#D95283
oklch(63% 0.174 0.9)
-
Step 600
600
#C4306D
oklch(55.6% 0.189 0.8)
-
Step 700
700 (this color)
#A21755
oklch(47% 0.176 1)
-
Step 800
800
#891E4A
oklch(42.6% 0.146 0.9)
-
Step 900
900
#6F203E
oklch(37.7% 0.114 1)
-
Step 950
950
#411424
oklch(26.9% 0.072 1.1)
#A21755 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) | #3C4456 | 0.200 |
| Deuteranopia (no green cones) | #615E52 | 0.179 |
| Tritanopia (no blue cones) | #B00035 | 0.053 |
| Achromatopsia (no color) | #545454 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A21755
#A21755
oklch(47% 0.176 1)
- #006A5E
#006A5E
oklch(47% 0.084 181.5)
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 #A21755, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Red #A50055 ΔE 0.014
- Dark Fuchsia #9D0759 ΔE 0.021
- Deep Magenta #A0025C ΔE 0.022
- Berry #990F4B ΔE 0.025
- Purple Red #990147 ΔE 0.032
- Raspberry #B00149 ΔE 0.033
- Mulberry #920A4E ΔE 0.039
- Cranberry #9E003A ΔE 0.041
Use #A21755 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.