#6778DC
Closest named color: Cornflower (#6A79F7). oklch(60.7% 0.152 273.8), rgb(103, 120, 220).
Aa
Black text reads best on this color (5.29:1).
About this color
#6778DC is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.152 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.041 away. Black text reads best on it, at 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.29:1 |
| White text | 3.96:1 |
Values
| HEX | #6778DC |
| RGB | rgb(103, 120, 220) |
| HSL | hsl(231, 63%, 63%) |
| OKLCH | oklch(60.7% 0.152 273.8) |
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 #6778DC | 3.96:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #6778DC | 5.29:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #6778DC text on white | 3.96:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #6778DC text on black | 5.29:1 | AA | Lc -34.9 | 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 500.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF1
oklch(80.9% 0.074 273.5)
-
Step 400
400
#899AEB
oklch(70.6% 0.12 273.9)
-
Step 500
500 (this color)
#6778DC
oklch(60.7% 0.152 273.8)
-
Step 600
600
#5766D2
oklch(55.5% 0.165 273.8)
-
Step 700
700
#4854B6
oklch(49% 0.154 274)
-
Step 800
800
#3B4693
oklch(42.8% 0.126 273.7)
-
Step 900
900
#323B75
oklch(37.6% 0.099 274)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#6778DC 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) | #4C85E0 | 0.041 |
| Deuteranopia (no green cones) | #3E7BDA | 0.043 |
| Tritanopia (no blue cones) | #2F8E9F | 0.135 |
| Achromatopsia (no color) | #808080 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6778DC
#6778DC
oklch(60.7% 0.152 273.8)
- #9B8000
#9B8000
oklch(60.7% 0.125 94)
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 #6778DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.041
- Soft Blue #6488EA ΔE 0.043
- Medium Slate Blue #7B68EE ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.063
- Royal Blue #4169E1 ΔE 0.063
- Medium Purple #9370DB ΔE 0.065
- Windows Blue #3778BF ΔE 0.070
Use #6778DC 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.