#6F78BC
Closest named color: Off Blue (#5684AE). oklch(59.4% 0.104 277), rgb(111, 120, 188).
Aa
Black text reads best on this color (5.08:1).
About this color
#6F78BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.104 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.053 away. Black text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.08:1 |
| White text | 4.12:1 |
Values
| HEX | #6F78BC |
| RGB | rgb(111, 120, 188) |
| HSL | hsl(233, 36%, 59%) |
| OKLCH | oklch(59.4% 0.104 277) |
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 #6F78BC | 4.12:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #6F78BC | 5.08:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #6F78BC text on white | 4.12:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #6F78BC 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
#D4D8EC
oklch(88.5% 0.028 276.8)
-
Step 300
300
#B8BEE2
oklch(80.9% 0.051 277.7)
-
Step 400
400
#939CD4
oklch(70.6% 0.083 277)
-
Step 500
500 (this color)
#6F78BC
oklch(59.4% 0.104 277)
-
Step 600
600
#636CB5
oklch(55.7% 0.113 276.7)
-
Step 700
700
#525A9B
oklch(49.2% 0.104 276.6)
-
Step 800
800
#43497E
oklch(42.6% 0.088 277.1)
-
Step 900
900
#393E65
oklch(37.8% 0.067 277.1)
-
Step 950
950
#21243B
oklch(26.9% 0.043 277.4)
#6F78BC 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) | #6180BF | 0.026 |
| Deuteranopia (no green cones) | #5B7ABA | 0.026 |
| Tritanopia (no blue cones) | #578691 | 0.093 |
| Achromatopsia (no color) | #7D7D7D | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F78BC
#6F78BC
oklch(59.4% 0.104 277)
- #907E2A
#907E2A
oklch(59.4% 0.104 96.9)
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 #6F78BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.053
- Cool Blue #4984B8 ΔE 0.053
- Steel Blue #4682B4 ΔE 0.055
- Dusty Blue #5A86AD ΔE 0.056
- Faded Blue #658CBB ΔE 0.056
- Windows Blue #3778BF ΔE 0.062
- Deep Lilac #966EBD ΔE 0.063
- Lavender Gray #7E7F9A ΔE 0.065
Use #6F78BC 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.