#6870C4
Closest named color: Dark Periwinkle (#665FD1). oklch(57.7% 0.128 277.5), rgb(104, 112, 196).
Aa
Black text reads best on this color (4.70:1).
About this color
#6870C4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, 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 0.050 away. Black text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #6870C4 |
| RGB | rgb(104, 112, 196) |
| HSL | hsl(235, 44%, 59%) |
| OKLCH | oklch(57.7% 0.128 277.5) |
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 #6870C4 | 4.46:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #6870C4 | 4.70:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #6870C4 text on white | 4.46:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #6870C4 text on black | 4.70:1 | AA | Lc -30.8 | 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
#B7BEE6
oklch(80.9% 0.057 277.3)
-
Step 400
400
#929BDA
oklch(70.6% 0.093 277.5)
-
Step 500
500
#7881D0
oklch(63% 0.119 277.5)
-
Step 600
600 (this color)
#6870C4
oklch(57.7% 0.128 277.5)
-
Step 700
700
#5158A3
oklch(49.2% 0.119 277.1)
-
Step 800
800
#434884
oklch(42.7% 0.099 277.8)
-
Step 900
900
#383D6A
oklch(37.8% 0.077 277.3)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#6870C4 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) | #4F7BC7 | 0.038 |
| Deuteranopia (no green cones) | #4874C2 | 0.039 |
| Tritanopia (no blue cones) | #478290 | 0.114 |
| Achromatopsia (no color) | #777777 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6870C4
#6870C4
oklch(57.7% 0.128 277.5)
- #8D7900
#8D7900
oklch(57.7% 0.119 97.6)
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 #6870C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.050
- Windows Blue #3778BF ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.058
- Light Indigo #6D5ACF ΔE 0.059
- French Blue #436BAD ΔE 0.062
- Iris #6258C4 ΔE 0.063
- Cool Blue #4984B8 ΔE 0.068
- Steel Blue #4682B4 ΔE 0.069
Use #6870C4 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.