#6973C7
Closest named color: Dark Periwinkle (#665FD1). oklch(58.6% 0.128 276.6), rgb(105, 115, 199).
Aa
Black text reads best on this color (4.87:1).
About this color
#6973C7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.128 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.056 away. Black text reads best on it, at 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.87:1 |
| White text | 4.30:1 |
Values
| HEX | #6973C7 |
| RGB | rgb(105, 115, 199) |
| HSL | hsl(234, 46%, 60%) |
| OKLCH | oklch(58.6% 0.128 276.6) |
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 #6973C7 | 4.30:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #6973C7 | 4.87:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #6973C7 text on white | 4.30:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #6973C7 text on black | 4.87:1 | AA | Lc -32.0 | 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
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D3D8EF
oklch(88.5% 0.032 276)
-
Step 300
300
#B6BEE6
oklch(80.9% 0.057 276.2)
-
Step 400
400
#919CDA
oklch(70.8% 0.092 276.1)
-
Step 500
500
#7782D0
oklch(63.1% 0.118 276.4)
-
Step 600
600 (this color)
#6973C7
oklch(58.6% 0.128 276.6)
-
Step 700
700
#5058A3
oklch(49.1% 0.119 276.5)
-
Step 800
800
#424884
oklch(42.7% 0.099 277)
-
Step 900
900
#373D6A
oklch(37.7% 0.077 276.3)
-
Step 950
950
#20243E
oklch(27% 0.049 276)
#6973C7 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) | #527ECA | 0.037 |
| Deuteranopia (no green cones) | #4A76C5 | 0.037 |
| Tritanopia (no blue cones) | #468593 | 0.114 |
| Achromatopsia (no color) | #7A7A7A | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6973C7
#6973C7
oklch(58.6% 0.128 276.6)
- #917B00
#917B00
oklch(58.6% 0.121 96.5)
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 #6973C7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.056
- Windows Blue #3778BF ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.065
- Light Indigo #6D5ACF ΔE 0.065
- Cool Blue #4984B8 ΔE 0.065
- Steel Blue #4682B4 ΔE 0.067
- French Blue #436BAD ΔE 0.067
- Soft Blue #6488EA ΔE 0.069
Use #6973C7 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.