#A637BC
Closest named color: Purply (#983FB2). oklch(55.2% 0.212 320.5), rgb(166, 55, 188).
Aa
White text reads best on this color (5.39:1).
About this color
#A637BC is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.212 and its hue 320°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purply (#983FB2), ΔE 0.032 away. White text reads best on it, at 5.39:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.212) |
| Temperature | in between |
| Nearest name | Purply (#983FB2) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #A637BC |
| RGB | rgb(166, 55, 188) |
| HSL | hsl(290, 55%, 48%) |
| OKLCH | oklch(55.2% 0.212 320.5) |
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 #A637BC | 5.39:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #A637BC | 3.89:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #A637BC text on white | 5.39:1 | AA | Lc 75.9 | Fine for body text |
| #A637BC text on black | 3.89:1 | AA large text | Lc -25.9 | 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 600.
-
Step 50
50
#F9F3FB
oklch(97.1% 0.012 317.7)
-
Step 100
100
#F3E4F5
oklch(93.6% 0.028 322.2)
-
Step 200
200
#EACEEF
oklch(88.5% 0.054 321.1)
-
Step 300
300
#DDADE7
oklch(81% 0.095 320.5)
-
Step 400
400
#CB7EDA
oklch(70.7% 0.153 320.9)
-
Step 500
500
#BC59D0
oklch(63.1% 0.195 320.6)
-
Step 600
600 (this color)
#A637BC
oklch(55.2% 0.212 320.5)
-
Step 700
700
#8F29A3
oklch(49.1% 0.197 320.5)
-
Step 800
800
#742484
oklch(42.6% 0.163 320.4)
-
Step 900
900
#5E246A
oklch(37.7% 0.128 320.4)
-
Step 950
950
#37163E
oklch(26.9% 0.081 320.3)
#A637BC 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) | #0063C0 | 0.214 |
| Deuteranopia (no green cones) | #446EB9 | 0.184 |
| Tritanopia (no blue cones) | #A75076 | 0.130 |
| Achromatopsia (no color) | #6A6A6A | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A637BC
#A637BC
oklch(55.2% 0.212 320.5)
- #238A00
#238A00
oklch(55.4% 0.18 140.5)
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 #A637BC, closest first.
No curated palette has a color within ΔE 0.04 of #A637BC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purply #983FB2 ΔE 0.032
- Dark Orchid #9932CC ΔE 0.039
- Vibrant Purple #AD03DE ΔE 0.067
- Purpley Pink #C83CB9 ΔE 0.069
- Medium Orchid #BA55D3 ΔE 0.074
- Dark Violet #9400D3 ΔE 0.075
- Amethyst #9B5FC0 ΔE 0.076
- Warm Purple #952E8F ΔE 0.077
Use #A637BC 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.