#6B6CF3
Closest named color: Medium Slate Blue (#7B68EE). oklch(60.3% 0.198 278.4), rgb(107, 108, 243).
Aa
Black text reads best on this color (5.06:1).
About this color
#6B6CF3 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.198 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.025 away. Black text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #6B6CF3 |
| RGB | rgb(107, 108, 243) |
| HSL | hsl(240, 85%, 69%) |
| OKLCH | oklch(60.3% 0.198 278.4) |
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 #6B6CF3 | 4.14:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #6B6CF3 | 5.06:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #6B6CF3 text on white | 4.14:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #6B6CF3 text on black | 5.06:1 | AA | Lc -33.5 | 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 500.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E8FD
oklch(93.5% 0.029 279.4)
-
Step 200
200
#D0D6FD
oklch(88.4% 0.054 278.3)
-
Step 300
300
#B2BBFF
oklch(81% 0.097 278.2)
-
Step 400
400
#8C94FF
oklch(70.7% 0.155 278.4)
-
Step 500
500 (this color)
#6B6CF3
oklch(60.3% 0.198 278.4)
-
Step 600
600
#5E59EC
oklch(55.6% 0.214 278.3)
-
Step 700
700
#4E47CD
oklch(49% 0.2 278.4)
-
Step 800
800
#403CA6
oklch(42.8% 0.165 278.5)
-
Step 900
900
#353584
oklch(37.8% 0.129 278.2)
-
Step 950
950
#1F204D
oklch(27.1% 0.081 278.5)
#6B6CF3 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) | #0082F8 | 0.082 |
| Deuteranopia (no green cones) | #0077F0 | 0.078 |
| Tritanopia (no blue cones) | #1E8CA5 | 0.173 |
| Achromatopsia (no color) | #7C7C7C | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B6CF3
#6B6CF3
oklch(60.3% 0.198 278.4)
- #958100
#958100
oklch(60.3% 0.125 98.3)
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 #6B6CF3, closest first.
No curated palette has a color within ΔE 0.04 of #6B6CF3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.025
- Cornflower #6A79F7 ΔE 0.031
- Dark Periwinkle #665FD1 ΔE 0.059
- Royal Blue #4169E1 ΔE 0.060
- Neon Blue #4361EE ΔE 0.060
- Purpley #8756E4 ΔE 0.063
- Light Indigo #6D5ACF ΔE 0.066
- Clear Blue #247AFD ΔE 0.069
Use #6B6CF3 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.