#6B6EE3
Closest named color: Medium Slate Blue (#7B68EE). oklch(59.5% 0.174 278.6), rgb(107, 110, 227).
Aa
Black text reads best on this color (4.96:1).
About this color
#6B6EE3 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.174 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.031 away. Black text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.96:1 |
| White text | 4.22:1 |
Values
| HEX | #6B6EE3 |
| RGB | rgb(107, 110, 227) |
| HSL | hsl(239, 68%, 65%) |
| OKLCH | oklch(59.5% 0.174 278.6) |
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 #6B6EE3 | 4.22:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #6B6EE3 | 4.96:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #6B6EE3 text on white | 4.22:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #6B6EE3 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
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D2D7F9
oklch(88.6% 0.047 278.8)
-
Step 300
300
#B4BCF7
oklch(81% 0.084 278.4)
-
Step 400
400
#8E96F4
oklch(70.6% 0.137 278.6)
-
Step 500
500 (this color)
#6B6EE3
oklch(59.5% 0.174 278.6)
-
Step 600
600
#605FDE
oklch(55.7% 0.189 278.7)
-
Step 700
700
#4F4DC1
oklch(49.1% 0.176 278.4)
-
Step 800
800
#41409C
oklch(42.7% 0.146 278.7)
-
Step 900
900
#36387C
oklch(37.8% 0.113 278.3)
-
Step 950
950
#1F2148
oklch(26.9% 0.071 278.2)
#6B6EE3 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) | #3080E7 | 0.067 |
| Deuteranopia (no green cones) | #1E76E1 | 0.071 |
| Tritanopia (no blue cones) | #35889E | 0.151 |
| Achromatopsia (no color) | #7B7B7B | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B6EE3
#6B6EE3
oklch(59.5% 0.174 278.6)
- #927F00
#927F00
oklch(59.6% 0.123 98.7)
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 #6B6EE3, closest first.
No curated palette has a color within ΔE 0.04 of #6B6EE3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.031
- Cornflower #6A79F7 ΔE 0.038
- Dark Periwinkle #665FD1 ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.054
- Royal Blue #4169E1 ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.056
- Medium Purple #9370DB ΔE 0.063
- Soft Blue #6488EA ΔE 0.064
Use #6B6EE3 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.