#6C73D4
Closest named color: Dark Periwinkle (#665FD1). oklch(59.6% 0.146 277.9), rgb(108, 115, 212).
Aa
Black text reads best on this color (5.04:1).
About this color
#6C73D4 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.146 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.051 away. Black text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #6C73D4 |
| RGB | rgb(108, 115, 212) |
| HSL | hsl(236, 55%, 63%) |
| OKLCH | oklch(59.6% 0.146 277.9) |
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 #6C73D4 | 4.16:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #6C73D4 | 5.04:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #6C73D4 text on white | 4.16:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #6C73D4 text on black | 5.04:1 | AA | Lc -33.1 | 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 500.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F4
oklch(88.4% 0.04 277.8)
-
Step 300
300
#B5BDEF
oklch(80.9% 0.071 277.6)
-
Step 400
400
#9099E7
oklch(70.7% 0.114 278)
-
Step 500
500 (this color)
#6C73D4
oklch(59.6% 0.146 277.9)
-
Step 600
600
#6065CE
oklch(55.6% 0.159 277.8)
-
Step 700
700
#5053B2
oklch(49.1% 0.148 278.1)
-
Step 800
800
#414590
oklch(42.8% 0.122 277.6)
-
Step 900
900
#373A73
oklch(37.6% 0.096 278.5)
-
Step 950
950
#202343
oklch(27.1% 0.059 277.6)
#6C73D4 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) | #4A80D8 | 0.047 |
| Deuteranopia (no green cones) | #4178D2 | 0.049 |
| Tritanopia (no blue cones) | #448899 | 0.129 |
| Achromatopsia (no color) | #7C7C7C | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C73D4
#6C73D4
oklch(59.6% 0.146 277.9)
- #937F00
#937F00
oklch(59.7% 0.123 98.1)
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 #6C73D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.051
- Cornflower #6A79F7 ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.053
- Soft Blue #6488EA ΔE 0.058
- Medium Purple #9370DB ΔE 0.060
- Light Indigo #6D5ACF ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.062
- Royal Blue #4169E1 ΔE 0.065
Use #6C73D4 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.