#6970CC
Closest named color: Dark Periwinkle (#665FD1). oklch(58.3% 0.14 277.9), rgb(105, 112, 204).
Aa
Black text reads best on this color (4.79:1).
About this color
#6970CC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.140 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.045 away. Black text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.79:1 |
| White text | 4.38:1 |
Values
| HEX | #6970CC |
| RGB | rgb(105, 112, 204) |
| HSL | hsl(236, 49%, 61%) |
| OKLCH | oklch(58.3% 0.14 277.9) |
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 #6970CC | 4.38:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #6970CC | 4.79:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #6970CC text on white | 4.38:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #6970CC text on black | 4.79:1 | AA | Lc -31.4 | 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
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D3D7F1
oklch(88.4% 0.036 278.7)
-
Step 300
300
#B6BDEA
oklch(80.8% 0.064 277.9)
-
Step 400
400
#929ADF
oklch(70.7% 0.101 278.4)
-
Step 500
500
#7880D6
oklch(63.1% 0.129 278)
-
Step 600
600 (this color)
#6970CC
oklch(58.3% 0.14 277.9)
-
Step 700
700
#5156A8
oklch(49.1% 0.129 277.9)
-
Step 800
800
#424788
oklch(42.7% 0.106 277.6)
-
Step 900
900
#383C6D
oklch(37.8% 0.083 278.1)
-
Step 950
950
#202340
oklch(26.9% 0.054 277.6)
#6970CC 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) | #4A7DCF | 0.046 |
| Deuteranopia (no green cones) | #4275CA | 0.046 |
| Tritanopia (no blue cones) | #448494 | 0.123 |
| Achromatopsia (no color) | #797979 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6970CC
#6970CC
oklch(58.3% 0.14 277.9)
- #8F7B00
#8F7B00
oklch(58.4% 0.121 97.7)
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 #6970CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.045
- Slate Blue #6A5ACD ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.055
- Windows Blue #3778BF ΔE 0.062
- Iris #6258C4 ΔE 0.062
- Medium Slate Blue #7B68EE ΔE 0.062
- Royal Blue #4169E1 ΔE 0.063
- Cornflower #6A79F7 ΔE 0.066
Use #6970CC 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.