#6B6CFB
Closest named color: Medium Slate Blue (#7B68EE). oklch(60.9% 0.208 278), rgb(107, 108, 251).
Aa
Black text reads best on this color (5.16:1).
About this color
#6B6CFB is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.208 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.030 away. Black text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.208) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #6B6CFB |
| RGB | rgb(107, 108, 251) |
| HSL | hsl(240, 95%, 70%) |
| OKLCH | oklch(60.9% 0.208 278) |
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 #6B6CFB | 4.06:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #6B6CFB | 5.16:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #6B6CFB text on white | 4.06:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #6B6CFB text on black | 5.16:1 | AA | Lc -34.2 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FE
oklch(93.5% 0.03 279.6)
-
Step 200
200
#D0D6FF
oklch(88.5% 0.057 278.6)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8B94FF
oklch(70.6% 0.155 278)
-
Step 500
500 (this color)
#6B6CFB
oklch(60.9% 0.208 278)
-
Step 600
600
#5D56F2
oklch(55.6% 0.226 278.1)
-
Step 700
700
#4D45D3
oklch(49.1% 0.21 277.9)
-
Step 800
800
#3F3AAB
oklch(42.8% 0.174 278)
-
Step 900
900
#343487
oklch(37.7% 0.135 277.7)
-
Step 950
950
#1E1F4F
oklch(26.9% 0.086 278)
#6B6CFB 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) | #0084FF | 0.083 |
| Deuteranopia (no green cones) | #0078F8 | 0.078 |
| Tritanopia (no blue cones) | #028EA9 | 0.181 |
| Achromatopsia (no color) | #7E7E7E | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B6CFB
#6B6CFB
oklch(60.9% 0.208 278)
- #978200
#978200
oklch(60.8% 0.125 97.8)
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 #6B6CFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.030
- Cornflower #6A79F7 ΔE 0.031
- Neon Blue #4361EE ΔE 0.062
- Royal Blue #4169E1 ΔE 0.066
- Clear Blue #247AFD ΔE 0.068
- Purpley #8756E4 ΔE 0.068
- Dark Periwinkle #665FD1 ΔE 0.069
- Soft Blue #6488EA ΔE 0.075
Use #6B6CFB 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.