#6D78BF
Closest named color: Cool Blue (#4984B8). oklch(59.4% 0.109 275.9), rgb(109, 120, 191).
Aa
Black text reads best on this color (5.08:1).
About this color
#6D78BF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.109 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.053 away. Black text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.08:1 |
| White text | 4.12:1 |
Values
| HEX | #6D78BF |
| RGB | rgb(109, 120, 191) |
| HSL | hsl(232, 39%, 59%) |
| OKLCH | oklch(59.4% 0.109 275.9) |
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 #6D78BF | 4.12:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #6D78BF | 5.08:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #6D78BF text on white | 4.12:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #6D78BF text on black | 5.08:1 | AA | Lc -33.4 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B7BEE4
oklch(80.9% 0.054 276.9)
-
Step 400
400
#929CD6
oklch(70.7% 0.086 276.4)
-
Step 500
500 (this color)
#6D78BF
oklch(59.4% 0.109 275.9)
-
Step 600
600
#616CB8
oklch(55.7% 0.118 275.7)
-
Step 700
700
#50599E
oklch(49% 0.11 275.9)
-
Step 800
800
#424980
oklch(42.6% 0.091 276.3)
-
Step 900
900
#373E67
oklch(37.8% 0.071 275.1)
-
Step 950
950
#20243C
oklch(26.9% 0.045 275.7)
#6D78BF 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) | #5F80C2 | 0.026 |
| Deuteranopia (no green cones) | #597ABD | 0.026 |
| Tritanopia (no blue cones) | #528692 | 0.097 |
| Achromatopsia (no color) | #7D7D7D | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D78BF
#6D78BF
oklch(59.4% 0.109 275.9)
- #927E23
#927E23
oklch(59.5% 0.109 96.2)
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 #6D78BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.053
- Off Blue #5684AE ΔE 0.054
- Steel Blue #4682B4 ΔE 0.055
- Faded Blue #658CBB ΔE 0.057
- Dusty Blue #5A86AD ΔE 0.058
- Windows Blue #3778BF ΔE 0.059
- Deep Lilac #966EBD ΔE 0.065
- Lavender Gray #7E7F9A ΔE 0.070
Use #6D78BF 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.