#6B78CB
Closest named color: Soft Blue (#6488EA). oklch(60% 0.127 275.2), rgb(107, 120, 203).
Aa
Black text reads best on this color (5.17:1).
About this color
#6B78CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.127 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.056 away. Black text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #6B78CB |
| RGB | rgb(107, 120, 203) |
| HSL | hsl(232, 48%, 61%) |
| OKLCH | oklch(60% 0.127 275.2) |
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 #6B78CB | 4.05:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #6B78CB | 5.17:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #6B78CB text on white | 4.05:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #6B78CB text on black | 5.17:1 | AA | Lc -34.0 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B5BEE9
oklch(80.9% 0.062 275.7)
-
Step 400
400
#8F9CDF
oklch(70.8% 0.099 275.2)
-
Step 500
500 (this color)
#6B78CB
oklch(60% 0.127 275.2)
-
Step 600
600
#5D69C3
oklch(55.5% 0.139 275.2)
-
Step 700
700
#4D57A8
oklch(49% 0.129 275.3)
-
Step 800
800
#3F4888
oklch(42.7% 0.106 275)
-
Step 900
900
#353D6D
oklch(37.7% 0.082 274.6)
-
Step 950
950
#1F2440
oklch(27% 0.052 274.7)
#6B78CB 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) | #5882CE | 0.032 |
| Deuteranopia (no green cones) | #507AC9 | 0.033 |
| Tritanopia (no blue cones) | #478998 | 0.111 |
| Achromatopsia (no color) | #7E7E7E | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B78CB
#6B78CB
oklch(60% 0.127 275.2)
- #977E00
#977E00
oklch(59.9% 0.123 95)
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 #6B78CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.056
- Windows Blue #3778BF ΔE 0.061
- Cool Blue #4984B8 ΔE 0.061
- Steel Blue #4682B4 ΔE 0.064
- Faded Blue #658CBB ΔE 0.065
- Cornflower #6A79F7 ΔE 0.066
- Off Blue #5684AE ΔE 0.067
- Dark Periwinkle #665FD1 ΔE 0.067
Use #6B78CB 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.