#6777BB
Closest named color: Cool Blue (#4984B8). oklch(58.6% 0.106 272.7), rgb(103, 119, 187).
Aa
Black text reads best on this color (4.93:1).
About this color
#6777BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.106 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.047 away. Black text reads best on it, at 4.93:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #6777BB |
| RGB | rgb(103, 119, 187) |
| HSL | hsl(229, 38%, 57%) |
| OKLCH | oklch(58.6% 0.106 272.7) |
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 #6777BB | 4.25:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #6777BB | 4.93:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #6777BB text on white | 4.25:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #6777BB text on black | 4.93:1 | AA | Lc -32.3 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F3
oklch(93.5% 0.014 272.7)
-
Step 200
200
#D3D8EB
oklch(88.4% 0.027 274.1)
-
Step 300
300
#B6BFE0
oklch(80.8% 0.048 273.3)
-
Step 400
400
#909ED1
oklch(70.7% 0.077 272.4)
-
Step 500
500
#7585C5
oklch(63% 0.098 272.6)
-
Step 600
600 (this color)
#6777BB
oklch(58.6% 0.106 272.7)
-
Step 700
700
#4E5C98
oklch(49.1% 0.098 272.4)
-
Step 800
800
#404B7C
oklch(42.7% 0.083 272.9)
-
Step 900
900
#363F63
oklch(37.7% 0.063 272.4)
-
Step 950
950
#20253A
oklch(27% 0.04 273.2)
#6777BB 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) | #5E7EBE | 0.020 |
| Deuteranopia (no green cones) | #5777B9 | 0.021 |
| Tritanopia (no blue cones) | #498590 | 0.095 |
| Achromatopsia (no color) | #7B7B7B | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6777BB
#6777BB
oklch(58.6% 0.106 272.7)
- #927A23
#927A23
oklch(58.6% 0.106 92.9)
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 #6777BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.047
- Steel Blue #4682B4 ΔE 0.048
- Off Blue #5684AE ΔE 0.049
- Windows Blue #3778BF ΔE 0.051
- Dusty Blue #5A86AD ΔE 0.054
- Faded Blue #658CBB ΔE 0.059
- Flat Blue #3C73A8 ΔE 0.061
- Stormy Blue #507B9C ΔE 0.061
Use #6777BB 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.