#66316B
Closest named color: Grape Purple (#5D1451). oklch(40.7% 0.111 324.1), rgb(102, 49, 107).
Aa
White text reads best on this color (9.47:1).
About this color
#66316B is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.111 and its hue 324°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.072 away. White text reads best on it, at 9.47:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #66316B |
| RGB | rgb(102, 49, 107) |
| HSL | hsl(295, 37%, 31%) |
| OKLCH | oklch(40.7% 0.111 324.1) |
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 #66316B | 9.47:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #66316B | 2.21:1 | Fails | Lc 12.4 | Not readable |
| #66316B text on white | 9.47:1 | AAA | Lc 91.5 | Preferred for body text |
| #66316B text on black | 2.21:1 | Fails | Lc -10.8 | Not readable |
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 800.
-
Step 50
50
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#F0E6F1
oklch(93.6% 0.018 323)
-
Step 200
200
#E6D1E7
oklch(88.4% 0.037 324.5)
-
Step 300
300
#D6B3D9
oklch(80.9% 0.065 323.6)
-
Step 400
400
#C18AC5
oklch(70.7% 0.104 324.3)
-
Step 500
500
#B06BB7
oklch(63% 0.134 323.7)
-
Step 600
600
#9B51A2
oklch(55.5% 0.145 324)
-
Step 700
700
#85428B
oklch(49.2% 0.134 324.2)
-
Step 800
800 (this color)
#66316B
oklch(40.7% 0.111 324.1)
-
Step 900
900
#58305B
oklch(37.8% 0.086 324.6)
-
Step 950
950
#331C35
oklch(26.8% 0.055 324.1)
#66316B 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) | #29426D | 0.107 |
| Deuteranopia (no green cones) | #3A4869 | 0.094 |
| Tritanopia (no blue cones) | #683849 | 0.066 |
| Achromatopsia (no color) | #464646 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66316B
#66316B
oklch(40.7% 0.111 324.1)
- #19581D
#19581D
oklch(40.6% 0.111 144.1)
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 #66316B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.072
- Velvet #750851 ΔE 0.072
- Rich Purple #720058 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.076
- Dark Slate Blue #483D8B ΔE 0.078
- Brownish Purple #76424E ΔE 0.084
- Purple #800080 ΔE 0.084
- Purple Brown #673A3F ΔE 0.085
Use #66316B 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.