#6C74CF
Closest named color: Dark Periwinkle (#665FD1). oklch(59.5% 0.138 277.5), rgb(108, 116, 207).
Aa
Black text reads best on this color (5.03:1).
About this color
#6C74CF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.138 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.055 away. Black text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #6C74CF |
| RGB | rgb(108, 116, 207) |
| HSL | hsl(235, 51%, 62%) |
| OKLCH | oklch(59.5% 0.138 277.5) |
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 #6C74CF | 4.16:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #6C74CF | 5.03:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #6C74CF text on white | 4.16:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #6C74CF text on black | 5.03:1 | 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
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D3D7F2
oklch(88.4% 0.037 278.9)
-
Step 300
300
#B5BDEC
oklch(80.8% 0.067 277.2)
-
Step 400
400
#909AE3
oklch(70.7% 0.107 277.3)
-
Step 500
500 (this color)
#6C74CF
oklch(59.5% 0.138 277.5)
-
Step 600
600
#6067C9
oklch(55.7% 0.149 277.3)
-
Step 700
700
#5055AE
oklch(49.2% 0.139 277.5)
-
Step 800
800
#41468D
oklch(42.8% 0.116 277.3)
-
Step 900
900
#373B70
oklch(37.7% 0.09 277.9)
-
Step 950
950
#202342
oklch(27% 0.057 277.6)
#6C74CF 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) | #4F80D2 | 0.043 |
| Deuteranopia (no green cones) | #4778CD | 0.044 |
| Tritanopia (no blue cones) | #478797 | 0.121 |
| Achromatopsia (no color) | #7C7C7C | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C74CF
#6C74CF
oklch(59.5% 0.138 277.5)
- #937E00
#937E00
oklch(59.5% 0.123 97.4)
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 #6C74CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.055
- Soft Blue #6488EA ΔE 0.060
- Cornflower #6A79F7 ΔE 0.060
- Medium Slate Blue #7B68EE ΔE 0.061
- Medium Purple #9370DB ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.064
- Slate Blue #6A5ACD ΔE 0.065
- Windows Blue #3778BF ΔE 0.065
Use #6C74CF 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.