#6D78BB
Closest named color: Off Blue (#5684AE). oklch(59.2% 0.103 275.7), rgb(109, 120, 187).
Aa
Black text reads best on this color (5.05:1).
About this color
#6D78BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.103 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.050 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #6D78BB |
| RGB | rgb(109, 120, 187) |
| HSL | hsl(232, 36%, 58%) |
| OKLCH | oklch(59.2% 0.103 275.7) |
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 #6D78BB | 4.15:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #6D78BB | 5.05:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #6D78BB text on white | 4.15:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #6D78BB text on black | 5.05:1 | AA | Lc -33.1 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B8BFDF
oklch(81% 0.046 275.6)
-
Step 400
400
#939DCF
oklch(70.6% 0.074 275.6)
-
Step 500
500
#7984C3
oklch(63% 0.096 275.7)
-
Step 600
600 (this color)
#6D78BB
oklch(59.2% 0.103 275.7)
-
Step 700
700
#525B97
oklch(49.1% 0.096 275.8)
-
Step 800
800
#434B7A
oklch(42.8% 0.079 275.2)
-
Step 900
900
#383E62
oklch(37.5% 0.062 275.8)
-
Step 950
950
#21253A
oklch(27.1% 0.04 275.2)
#6D78BB 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) | #6180BE | 0.024 |
| Deuteranopia (no green cones) | #5B79B9 | 0.023 |
| Tritanopia (no blue cones) | #548591 | 0.090 |
| Achromatopsia (no color) | #7C7C7C | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D78BB
#6D78BB
oklch(59.2% 0.103 275.7)
- #917D2B
#917D2B
oklch(59.2% 0.103 95.2)
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 #6D78BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.050
- Cool Blue #4984B8 ΔE 0.051
- Steel Blue #4682B4 ΔE 0.053
- Dusty Blue #5A86AD ΔE 0.054
- Faded Blue #658CBB ΔE 0.056
- Windows Blue #3778BF ΔE 0.059
- Lavender Gray #7E7F9A ΔE 0.064
- Stormy Blue #507B9C ΔE 0.065
Use #6D78BB 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.