#660FAF
Closest named color: Grape (#7209B7). oklch(42.6% 0.217 300.8), rgb(102, 15, 175).
Aa
White text reads best on this color (9.32:1).
About this color
#660FAF is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.217 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape (#7209B7), ΔE 0.027 away. White text reads best on it, at 9.32:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.217) |
| Temperature | in between |
| Nearest name | Grape (#7209B7) |
| Black text | 2.25:1 |
| White text | 9.32:1 |
Values
| HEX | #660FAF |
| RGB | rgb(102, 15, 175) |
| HSL | hsl(273, 84%, 37%) |
| OKLCH | oklch(42.6% 0.217 300.8) |
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 #660FAF | 9.32:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #660FAF | 2.25:1 | Fails | Lc 14.2 | Not readable |
| #660FAF text on white | 9.32:1 | AAA | Lc 89.8 | Fine for body text |
| #660FAF text on black | 2.25:1 | Fails | Lc -12.5 | 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
#CDAFFF
oklch(80.9% 0.115 301.1)
-
Step 400
400
#B581FF
oklch(70.8% 0.182 300.9)
-
Step 500
500
#A457FF
oklch(63.1% 0.238 300.8)
-
Step 600
600
#941CF9
oklch(55.6% 0.282 300.9)
-
Step 700
700
#7E00D9
oklch(49.1% 0.261 300.7)
-
Step 800
800 (this color)
#660FAF
oklch(42.6% 0.217 300.8)
-
Step 900
900
#531C8B
oklch(37.8% 0.169 300.8)
-
Step 950
950
#301351
oklch(26.9% 0.107 300.7)
#660FAF 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) | #0046B3 | 0.141 |
| Deuteranopia (no green cones) | #0046AC | 0.142 |
| Tritanopia (no blue cones) | #554466 | 0.158 |
| Achromatopsia (no color) | #474747 | 0.219 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660FAF
#660FAF
oklch(42.6% 0.217 300.8)
- #475600
#475600
oklch(42.5% 0.102 120.6)
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 #660FAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape #7209B7 ΔE 0.027
- Chrysanthemum #560BAD ΔE 0.034
- Rebecca Purple #663399 ΔE 0.059
- Purple Blue #5D21D0 ΔE 0.063
- Imperial Purple #480CA8 ΔE 0.064
- Violet Blue #510AC9 ΔE 0.064
- Blue With A Hint Of Purple #533CC6 ΔE 0.080
- Blurple #5539CC ΔE 0.081
Use #660FAF 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.