#A21B56
Closest named color: Violet Red (#A50055). oklch(47.3% 0.173 0.9), rgb(162, 27, 86).
Aa
White text reads best on this color (7.42:1).
About this color
#A21B56 is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.173 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Violet Red (#A50055), ΔE 0.017 away. White text reads best on it, at 7.42:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Violet Red (#A50055) |
| Black text | 2.82:1 |
| White text | 7.42:1 |
Values
| HEX | #A21B56 |
| RGB | rgb(162, 27, 86) |
| HSL | hsl(334, 71%, 37%) |
| OKLCH | oklch(47.3% 0.173 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 #A21B56 | 7.42:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #A21B56 | 2.82:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #A21B56 text on white | 7.42:1 | AAA | Lc 84.2 | Fine for body text |
| #A21B56 text on black | 2.82:1 | Fails | Lc -17.7 | 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
#F9E4E9
oklch(93.7% 0.024 1.3)
-
Step 200
200
#F5CDD7
oklch(88.5% 0.047 1.3)
-
Step 300
300
#EFAABD
oklch(80.9% 0.084 1.1)
-
Step 400
400
#E37A9C
oklch(70.6% 0.134 0.5)
-
Step 500
500
#D85483
oklch(63.1% 0.171 1.1)
-
Step 600
600
#C3326D
oklch(55.6% 0.186 0.8)
-
Step 700
700 (this color)
#A21B56
oklch(47.3% 0.173 0.9)
-
Step 800
800
#89204A
oklch(42.8% 0.143 1.3)
-
Step 900
900
#6E213E
oklch(37.7% 0.112 0.9)
-
Step 950
950
#411524
oklch(27.1% 0.07 1.7)
#A21B56 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) | #3E4557 | 0.196 |
| Deuteranopia (no green cones) | #625E53 | 0.174 |
| Tritanopia (no blue cones) | #B00037 | 0.052 |
| Achromatopsia (no color) | #555555 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A21B56
#A21B56
oklch(47.3% 0.173 0.9)
- #006B5E
#006B5E
oklch(47.3% 0.085 180.6)
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 #A21B56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Red #A50055 ΔE 0.017
- Dark Fuchsia #9D0759 ΔE 0.024
- Deep Magenta #A0025C ΔE 0.025
- Berry #990F4B ΔE 0.028
- Raspberry #B00149 ΔE 0.034
- Purple Red #990147 ΔE 0.035
- Mulberry #920A4E ΔE 0.042
- Red Violet #9E0168 ΔE 0.042
Use #A21B56 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.