#6D78AA
Closest named color: Off Blue (#5684AE). oklch(58.4% 0.078 274.2), rgb(109, 120, 170).
Aa
Black text reads best on this color (4.91:1).
About this color
#6D78AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.078 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.040 away. Black text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #6D78AA |
| RGB | rgb(109, 120, 170) |
| HSL | hsl(229, 26%, 55%) |
| OKLCH | oklch(58.4% 0.078 274.2) |
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 #6D78AA | 4.27:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #6D78AA | 4.91:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #6D78AA text on white | 4.27:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #6D78AA text on black | 4.91:1 | AA | Lc -32.2 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D5D8E6
oklch(88.4% 0.019 276.3)
-
Step 300
300
#B9BFD8
oklch(80.8% 0.036 274.9)
-
Step 400
400
#959FC4
oklch(70.7% 0.055 273.1)
-
Step 500
500
#7C87B5
oklch(63.2% 0.071 273.8)
-
Step 600
600 (this color)
#6D78AA
oklch(58.4% 0.078 274.2)
-
Step 700
700
#545D8A
oklch(49% 0.073 274.7)
-
Step 800
800
#454C70
oklch(42.6% 0.061 275.1)
-
Step 900
900
#3A405B
oklch(37.8% 0.047 274.3)
-
Step 950
950
#222535
oklch(26.9% 0.03 276)
#6D78AA 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) | #687DAC | 0.014 |
| Deuteranopia (no green cones) | #6478A9 | 0.012 |
| Tritanopia (no blue cones) | #5B828A | 0.070 |
| Achromatopsia (no color) | #7A7A7A | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D78AA
#6D78AA
oklch(58.4% 0.078 274.2)
- #8A7B43
#8A7B43
oklch(58.4% 0.078 94.8)
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 #6D78AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.040
- Dusty Blue #5A86AD ΔE 0.043
- Lavender Gray #7E7F9A ΔE 0.044
- Stormy Blue #507B9C ΔE 0.045
- Steel Blue #4682B4 ΔE 0.048
- Cool Blue #4984B8 ΔE 0.049
- Dull Blue #49759C ΔE 0.052
- Grey Blue #647D8E ΔE 0.052
Use #6D78AA 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.