#6C6ED3
Closest named color: Dark Periwinkle (#665FD1). oklch(58.6% 0.152 279.8), rgb(108, 110, 211).
Aa
Black text reads best on this color (4.80:1).
About this color
#6C6ED3 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.152 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.039 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.80:1 |
| White text | 4.36:1 |
Values
| HEX | #6C6ED3 |
| RGB | rgb(108, 110, 211) |
| HSL | hsl(239, 54%, 63%) |
| OKLCH | oklch(58.6% 0.152 279.8) |
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 #6C6ED3 | 4.36:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #6C6ED3 | 4.80:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #6C6ED3 text on white | 4.36:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #6C6ED3 text on black | 4.80:1 | AA | Lc -31.6 | 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
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D3D7F2
oklch(88.4% 0.037 278.9)
-
Step 300
300
#B7BCED
oklch(80.8% 0.069 280.2)
-
Step 400
400
#9399E4
oklch(70.8% 0.109 279.7)
-
Step 500
500
#7A7EDC
oklch(63.2% 0.14 279.8)
-
Step 600
600 (this color)
#6C6ED3
oklch(58.6% 0.152 279.8)
-
Step 700
700
#5353AE
oklch(49.1% 0.142 279.8)
-
Step 800
800
#44458D
oklch(42.8% 0.116 279.7)
-
Step 900
900
#393A70
oklch(37.6% 0.091 280.3)
-
Step 950
950
#212342
oklch(27.1% 0.057 279.1)
#6C6ED3 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) | #417DD7 | 0.057 |
| Deuteranopia (no green cones) | #3975D1 | 0.058 |
| Tritanopia (no blue cones) | #458496 | 0.133 |
| Achromatopsia (no color) | #797979 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C6ED3
#6C6ED3
oklch(58.6% 0.152 279.8)
- #8D7D00
#8D7D00
oklch(58.6% 0.122 100.3)
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 #6C6ED3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.049
- Medium Slate Blue #7B68EE ΔE 0.049
- Cornflower #6A79F7 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.060
- Iris #6258C4 ΔE 0.060
- Medium Purple #9370DB ΔE 0.062
Use #6C6ED3 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.