#6B6DDE
Closest named color: Medium Slate Blue (#7B68EE). oklch(59% 0.168 279.1), rgb(107, 109, 222).
Aa
Black text reads best on this color (4.86:1).
About this color
#6B6DDE is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.168 and its hue 279°. 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 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #6B6DDE |
| RGB | rgb(107, 109, 222) |
| HSL | hsl(239, 64%, 65%) |
| OKLCH | oklch(59% 0.168 279.1) |
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 #6B6DDE | 4.31:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #6B6DDE | 4.86:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #6B6DDE text on white | 4.31:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #6B6DDE text on black | 4.86:1 | AA | Lc -32.1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F5
oklch(88.5% 0.041 279.5)
-
Step 300
300
#B6BCF2
oklch(80.9% 0.076 279.6)
-
Step 400
400
#9198EB
oklch(70.8% 0.121 279.1)
-
Step 500
500
#777CE4
oklch(63.1% 0.154 278.9)
-
Step 600
600 (this color)
#6B6DDE
oklch(59% 0.168 279.1)
-
Step 700
700
#5151B6
oklch(49.1% 0.156 279)
-
Step 800
800
#424393
oklch(42.7% 0.129 278.9)
-
Step 900
900
#373976
oklch(37.6% 0.102 278.9)
-
Step 950
950
#202245
oklch(27% 0.064 278.7)
#6B6DDE 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) | #337EE2 | 0.066 |
| Deuteranopia (no green cones) | #2675DC | 0.069 |
| Tritanopia (no blue cones) | #3A869B | 0.146 |
| Achromatopsia (no color) | #7A7A7A | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B6DDE
#6B6DDE
oklch(59% 0.168 279.1)
- #907E00
#907E00
oklch(59.2% 0.123 99.2)
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 #6B6DDE, 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
- Dark Periwinkle #665FD1 ΔE 0.039
- Cornflower #6A79F7 ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.050
- Royal Blue #4169E1 ΔE 0.054
- Medium Purple #9370DB ΔE 0.063
- Purpley #8756E4 ΔE 0.064
Use #6B6DDE 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.