#6777C8
Closest named color: Windows Blue (#3778BF). oklch(59.3% 0.125 273.6), rgb(103, 119, 200).
Aa
Black text reads best on this color (5.04:1).
About this color
#6777C8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.125 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.054 away. Black text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.04:1 |
| White text | 4.15:1 |
Values
| HEX | #6777C8 |
| RGB | rgb(103, 119, 200) |
| HSL | hsl(230, 47%, 59%) |
| OKLCH | oklch(59.3% 0.125 273.6) |
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 #6777C8 | 4.15:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #6777C8 | 5.04:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #6777C8 text on white | 4.15:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #6777C8 text on black | 5.04:1 | AA | Lc -33.2 | 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
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B5BFE6
oklch(81% 0.056 273.8)
-
Step 400
400
#8E9DD9
oklch(70.7% 0.09 273.1)
-
Step 500
500
#7383CF
oklch(63% 0.116 273.6)
-
Step 600
600 (this color)
#6777C8
oklch(59.3% 0.125 273.6)
-
Step 700
700
#4C5AA2
oklch(49.2% 0.116 273.1)
-
Step 800
800
#3F4A83
oklch(42.8% 0.095 273.5)
-
Step 900
900
#353E69
oklch(37.7% 0.074 273.4)
-
Step 950
950
#1F243E
oklch(26.9% 0.049 274.4)
#6777C8 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) | #5881CB | 0.030 |
| Deuteranopia (no green cones) | #4E78C6 | 0.030 |
| Tritanopia (no blue cones) | #418896 | 0.111 |
| Achromatopsia (no color) | #7C7C7C | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6777C8
#6777C8
oklch(59.3% 0.125 273.6)
- #977C00
#977C00
oklch(59.4% 0.122 93.6)
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 #6777C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.054
- Cool Blue #4984B8 ΔE 0.057
- Steel Blue #4682B4 ΔE 0.060
- Soft Blue #6488EA ΔE 0.062
- Off Blue #5684AE ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.065
- Faded Blue #658CBB ΔE 0.066
- Dusty Blue #5A86AD ΔE 0.068
Use #6777C8 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.