#6975CC
Closest named color: Dark Periwinkle (#665FD1). oklch(59.3% 0.133 275.7), rgb(105, 117, 204).
Aa
Black text reads best on this color (5.01:1).
About this color
#6975CC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.133 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.058 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #6975CC |
| RGB | rgb(105, 117, 204) |
| HSL | hsl(233, 49%, 61%) |
| OKLCH | oklch(59.3% 0.133 275.7) |
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 #6975CC | 4.18:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #6975CC | 5.01:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #6975CC text on white | 4.18:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #6975CC text on black | 5.01:1 | AA | Lc -33.0 | 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
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D3D8F0
oklch(88.6% 0.033 276.3)
-
Step 300
300
#B5BEE8
oklch(80.9% 0.06 275.5)
-
Step 400
400
#909CDC
oklch(70.8% 0.095 275.6)
-
Step 500
500
#7582D3
oklch(63.1% 0.122 275.4)
-
Step 600
600 (this color)
#6975CC
oklch(59.3% 0.133 275.7)
-
Step 700
700
#4E58A6
oklch(49.1% 0.124 275.4)
-
Step 800
800
#404886
oklch(42.6% 0.102 275.6)
-
Step 900
900
#363D6B
oklch(37.7% 0.079 275.4)
-
Step 950
950
#20243F
oklch(27.1% 0.05 276.1)
#6975CC 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) | #5280CF | 0.036 |
| Deuteranopia (no green cones) | #4978CA | 0.038 |
| Tritanopia (no blue cones) | #438796 | 0.118 |
| Achromatopsia (no color) | #7C7C7C | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6975CC
#6975CC
oklch(59.3% 0.133 275.7)
- #947D00
#947D00
oklch(59.3% 0.122 96.1)
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 #6975CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.058
- Windows Blue #3778BF ΔE 0.059
- Soft Blue #6488EA ΔE 0.061
- Cornflower #6A79F7 ΔE 0.065
- Cool Blue #4984B8 ΔE 0.066
- Light Indigo #6D5ACF ΔE 0.068
- Slate Blue #6A5ACD ΔE 0.068
- Medium Purple #9370DB ΔE 0.068
Use #6975CC 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.