#6873CC
Closest named color: Dark Periwinkle (#665FD1). oklch(58.8% 0.136 276.1), rgb(104, 115, 204).
Aa
Black text reads best on this color (4.91:1).
About this color
#6873CC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.136 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.052 away. Black text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #6873CC |
| RGB | rgb(104, 115, 204) |
| HSL | hsl(233, 50%, 60%) |
| OKLCH | oklch(58.8% 0.136 276.1) |
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 #6873CC | 4.27:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #6873CC | 4.91:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #6873CC text on white | 4.27:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #6873CC text on black | 4.91:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D3D8F0
oklch(88.6% 0.033 276.3)
-
Step 300
300
#B5BEE9
oklch(80.9% 0.062 275.7)
-
Step 400
400
#909BDD
oklch(70.6% 0.097 276.3)
-
Step 500
500
#7681D4
oklch(63.1% 0.125 276.5)
-
Step 600
600 (this color)
#6873CC
oklch(58.8% 0.136 276.1)
-
Step 700
700
#4F57A7
oklch(49.1% 0.127 276.4)
-
Step 800
800
#404887
oklch(42.7% 0.104 275.6)
-
Step 900
900
#363D6C
oklch(37.8% 0.081 275.5)
-
Step 950
950
#20243F
oklch(27.1% 0.05 276.1)
#6873CC 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) | #4F7FCF | 0.039 |
| Deuteranopia (no green cones) | #4676CA | 0.040 |
| Tritanopia (no blue cones) | #418695 | 0.121 |
| Achromatopsia (no color) | #7A7A7A | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6873CC
#6873CC
oklch(58.8% 0.136 276.1)
- #927B00
#927B00
oklch(58.7% 0.121 95.9)
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 #6873CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.052
- Windows Blue #3778BF ΔE 0.059
- Slate Blue #6A5ACD ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.062
- Soft Blue #6488EA ΔE 0.064
- Cornflower #6A79F7 ΔE 0.065
- Royal Blue #4169E1 ΔE 0.065
- Medium Slate Blue #7B68EE ΔE 0.066
Use #6873CC 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.