#6778CA
Closest named color: Windows Blue (#3778BF). oklch(59.6% 0.126 273.2), rgb(103, 120, 202).
Aa
Black text reads best on this color (5.11:1).
About this color
#6778CA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.126 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.055 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #6778CA |
| RGB | rgb(103, 120, 202) |
| HSL | hsl(230, 48%, 60%) |
| OKLCH | oklch(59.6% 0.126 273.2) |
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 #6778CA | 4.10:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #6778CA | 5.11:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #6778CA text on white | 4.10:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #6778CA text on black | 5.11:1 | AA | Lc -33.6 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B3BFE9
oklch(81% 0.061 272.5)
-
Step 400
400
#8C9CDF
oklch(70.6% 0.1 273.3)
-
Step 500
500 (this color)
#6778CA
oklch(59.6% 0.126 273.2)
-
Step 600
600
#5A6BC3
oklch(55.7% 0.137 273)
-
Step 700
700
#4A58A8
oklch(49% 0.128 273.3)
-
Step 800
800
#3D4988
oklch(42.8% 0.105 273.1)
-
Step 900
900
#343D6D
oklch(37.7% 0.083 273.8)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#6778CA 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) | #5882CD | 0.029 |
| Deuteranopia (no green cones) | #4E79C8 | 0.030 |
| Tritanopia (no blue cones) | #3F8997 | 0.112 |
| Achromatopsia (no color) | #7D7D7D | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6778CA
#6778CA
oklch(59.6% 0.126 273.2)
- #987C00
#987C00
oklch(59.6% 0.122 93)
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 #6778CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.055
- Cool Blue #4984B8 ΔE 0.057
- Soft Blue #6488EA ΔE 0.058
- Steel Blue #4682B4 ΔE 0.060
- Off Blue #5684AE ΔE 0.064
- Faded Blue #658CBB ΔE 0.065
- Dark Periwinkle #665FD1 ΔE 0.066
- Dark Sky Blue #448EE4 ΔE 0.067
Use #6778CA 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.