#660BB1
Closest named color: Grape (#7209B7). oklch(42.6% 0.22 300.4), rgb(102, 11, 177).
Aa
White text reads best on this color (9.34:1).
About this color
#660BB1 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.220 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape (#7209B7), ΔE 0.026 away. White text reads best on it, at 9.34:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.220) |
| Temperature | in between |
| Nearest name | Grape (#7209B7) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #660BB1 |
| RGB | rgb(102, 11, 177) |
| HSL | hsl(273, 88%, 37%) |
| OKLCH | oklch(42.6% 0.22 300.4) |
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 #660BB1 | 9.34:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #660BB1 | 2.24:1 | Fails | Lc 14.3 | Not readable |
| #660BB1 text on white | 9.34:1 | AAA | Lc 89.7 | Fine for body text |
| #660BB1 text on black | 2.24:1 | Fails | Lc -12.6 | 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
#F7F3FF
oklch(97.1% 0.016 301.2)
-
Step 100
100
#EDE5FF
oklch(93.6% 0.036 299.7)
-
Step 200
200
#E0D0FF
oklch(88.6% 0.066 300.6)
-
Step 300
300
#CCB0FF
oklch(80.9% 0.113 300.2)
-
Step 400
400
#B481FF
oklch(70.7% 0.182 300.5)
-
Step 500
500
#A358FF
oklch(63.1% 0.236 300.3)
-
Step 600
600
#9417FC
oklch(55.7% 0.286 300.5)
-
Step 700
700
#7D00D9
oklch(49% 0.261 300.3)
-
Step 800
800 (this color)
#660BB1
oklch(42.6% 0.22 300.4)
-
Step 900
900
#531B8C
oklch(37.8% 0.171 300.6)
-
Step 950
950
#301352
oklch(27% 0.108 300.2)
#660BB1 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) | #0046B5 | 0.142 |
| Deuteranopia (no green cones) | #0045AE | 0.142 |
| Tritanopia (no blue cones) | #544467 | 0.161 |
| Achromatopsia (no color) | #474747 | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660BB1
#660BB1
oklch(42.6% 0.22 300.4)
- #485600
#485600
oklch(42.6% 0.101 120)
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 #660BB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape #7209B7 ΔE 0.026
- Chrysanthemum #560BAD ΔE 0.034
- Purple Blue #5D21D0 ΔE 0.061
- Violet Blue #510AC9 ΔE 0.062
- Rebecca Purple #663399 ΔE 0.062
- Imperial Purple #480CA8 ΔE 0.064
- Blue With A Hint Of Purple #533CC6 ΔE 0.080
- Blurple #5539CC ΔE 0.080
Use #660BB1 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.