#6474CD
Closest named color: Dark Periwinkle (#665FD1). oklch(58.8% 0.137 273.8), rgb(100, 116, 205).
Aa
Black text reads best on this color (4.92:1).
About this color
#6474CD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.137 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.054 away. Black text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #6474CD |
| RGB | rgb(100, 116, 205) |
| HSL | hsl(231, 51%, 60%) |
| OKLCH | oklch(58.8% 0.137 273.8) |
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 #6474CD | 4.26:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #6474CD | 4.92:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #6474CD text on white | 4.26:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #6474CD text on black | 4.92:1 | AA | Lc -32.3 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B4BEE9
oklch(80.8% 0.062 274.7)
-
Step 400
400
#8D9CDE
oklch(70.7% 0.098 273.8)
-
Step 500
500
#7282D5
oklch(63% 0.126 274)
-
Step 600
600 (this color)
#6474CD
oklch(58.8% 0.137 273.8)
-
Step 700
700
#4B58A8
oklch(49.1% 0.128 273.8)
-
Step 800
800
#3E4888
oklch(42.6% 0.106 274.3)
-
Step 900
900
#343D6D
oklch(37.7% 0.083 273.8)
-
Step 950
950
#1F2440
oklch(27% 0.052 274.7)
#6474CD 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) | #4F7FD0 | 0.034 |
| Deuteranopia (no green cones) | #4476CB | 0.036 |
| Tritanopia (no blue cones) | #368796 | 0.122 |
| Achromatopsia (no color) | #7A7A7A | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6474CD
#6474CD
oklch(58.8% 0.137 273.8)
- #957A00
#957A00
oklch(58.8% 0.12 93.3)
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 #6474CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.054
- Windows Blue #3778BF ΔE 0.054
- Royal Blue #4169E1 ΔE 0.062
- Soft Blue #6488EA ΔE 0.062
- Cornflower #6A79F7 ΔE 0.064
- Slate Blue #6A5ACD ΔE 0.064
- Light Indigo #6D5ACF ΔE 0.065
- Cool Blue #4984B8 ΔE 0.066
Use #6474CD 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.