#7B66CE
Closest named color: Light Indigo (#6D5ACF). oklch(58% 0.155 290), rgb(123, 102, 206).
Aa
Black text reads best on this color (4.63:1).
About this color
#7B66CE is a medium-dark, vivid purple. In OKLCH its lightness is 58%, its chroma 0.155 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.039 away. Black text reads best on it, at 4.63:1.
| Hue family | Purples |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 4.63:1 |
| White text | 4.53:1 |
Values
| HEX | #7B66CE |
| RGB | rgb(123, 102, 206) |
| HSL | hsl(252, 51%, 60%) |
| OKLCH | oklch(58% 0.155 290) |
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 #7B66CE | 4.53:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #7B66CE | 4.63:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #7B66CE text on white | 4.53:1 | AA | Lc 71.3 | Content text, not long reading |
| #7B66CE text on black | 4.63:1 | AA | Lc -30.4 | Non-text elements, placeholder text |
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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F2
oklch(88.4% 0.04 290.3)
-
Step 300
300
#BFBAEB
oklch(81% 0.069 289.4)
-
Step 400
400
#A094E1
oklch(70.7% 0.111 290.4)
-
Step 500
500
#8978D9
oklch(63.1% 0.143 289.7)
-
Step 600
600 (this color)
#7B66CE
oklch(58% 0.155 290)
-
Step 700
700
#624EAB
oklch(49.2% 0.143 290)
-
Step 800
800
#50408B
oklch(42.7% 0.12 290.2)
-
Step 900
900
#42376F
oklch(37.7% 0.093 290.2)
-
Step 950
950
#262141
oklch(27.1% 0.058 289.1)
#7B66CE 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) | #3B78D2 | 0.084 |
| Deuteranopia (no green cones) | #3D74CC | 0.081 |
| Tritanopia (no blue cones) | #647B90 | 0.128 |
| Achromatopsia (no color) | #767676 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7B66CE
#7B66CE
oklch(58% 0.155 290)
- #7F8000
#7F8000
oklch(58% 0.127 110.3)
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 #7B66CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.039
- Dark Periwinkle #665FD1 ΔE 0.039
- Slate Blue #6A5ACD ΔE 0.042
- Deep Lavender #8D5EB7 ΔE 0.047
- Medium Slate Blue #7B68EE ΔE 0.048
- Medium Purple #9370DB ΔE 0.051
- Purpley #8756E4 ΔE 0.053
- Iris #6258C4 ΔE 0.056
Use #7B66CE 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.