#6B6FDF
Closest named color: Medium Slate Blue (#7B68EE). oklch(59.4% 0.167 278.5), rgb(107, 111, 223).
Aa
Black text reads best on this color (4.96:1).
About this color
#6B6FDF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.167 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.036 away. Black text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.96:1 |
| White text | 4.23:1 |
Values
| HEX | #6B6FDF |
| RGB | rgb(107, 111, 223) |
| HSL | hsl(238, 64%, 65%) |
| OKLCH | oklch(59.4% 0.167 278.5) |
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 #6B6FDF | 4.23:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #6B6FDF | 4.96:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #6B6FDF text on white | 4.23:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #6B6FDF text on black | 4.96:1 | AA | Lc -32.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F8
oklch(88.6% 0.046 278.6)
-
Step 300
300
#B4BCF5
oklch(80.9% 0.081 278.2)
-
Step 400
400
#8F97F1
oklch(70.7% 0.131 278.6)
-
Step 500
500 (this color)
#6B6FDF
oklch(59.4% 0.167 278.5)
-
Step 600
600
#6060DA
oklch(55.6% 0.182 278.7)
-
Step 700
700
#4F4FBD
oklch(49.1% 0.169 278.2)
-
Step 800
800
#414199
oklch(42.7% 0.14 278.7)
-
Step 900
900
#36387A
oklch(37.7% 0.11 278.4)
-
Step 950
950
#202147
oklch(26.9% 0.069 279.5)
#6B6FDF 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) | #3780E3 | 0.063 |
| Deuteranopia (no green cones) | #2977DD | 0.066 |
| Tritanopia (no blue cones) | #39889D | 0.145 |
| Achromatopsia (no color) | #7B7B7B | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B6FDF
#6B6FDF
oklch(59.4% 0.167 278.5)
- #927E00
#927E00
oklch(59.4% 0.123 98)
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 #6B6FDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.036
- Cornflower #6A79F7 ΔE 0.041
- Dark Periwinkle #665FD1 ΔE 0.044
- Light Indigo #6D5ACF ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.055
- Royal Blue #4169E1 ΔE 0.055
- Medium Purple #9370DB ΔE 0.061
- Soft Blue #6488EA ΔE 0.062
Use #6B6FDF 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.