#6C78CD
Closest named color: Soft Blue (#6488EA). oklch(60.2% 0.129 275.7), rgb(108, 120, 205).
Aa
Black text reads best on this color (5.20:1).
About this color
#6C78CD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.129 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.054 away. Black text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.20:1 |
| White text | 4.03:1 |
Values
| HEX | #6C78CD |
| RGB | rgb(108, 120, 205) |
| HSL | hsl(233, 49%, 61%) |
| OKLCH | oklch(60.2% 0.129 275.7) |
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 #6C78CD | 4.03:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #6C78CD | 5.20:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #6C78CD text on white | 4.03:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #6C78CD text on black | 5.20:1 | AA | Lc -34.2 | 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 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
#B5BEEA
oklch(80.9% 0.063 275.9)
-
Step 400
400
#8F9BE0
oklch(70.7% 0.102 275.9)
-
Step 500
500 (this color)
#6C78CD
oklch(60.2% 0.129 275.7)
-
Step 600
600
#5E69C4
oklch(55.6% 0.14 275.7)
-
Step 700
700
#4E57A9
oklch(49.1% 0.13 275.8)
-
Step 800
800
#404789
oklch(42.6% 0.108 276.2)
-
Step 900
900
#363C6E
oklch(37.7% 0.085 276.3)
-
Step 950
950
#1F2440
oklch(27% 0.052 274.7)
#6C78CD 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) | #5783D0 | 0.035 |
| Deuteranopia (no green cones) | #4F7BCB | 0.035 |
| Tritanopia (no blue cones) | #488A98 | 0.116 |
| Achromatopsia (no color) | #7E7E7E | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C78CD
#6C78CD
oklch(60.2% 0.129 275.7)
- #977F00
#977F00
oklch(60.1% 0.124 95.7)
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 #6C78CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.054
- Windows Blue #3778BF ΔE 0.063
- Cornflower #6A79F7 ΔE 0.063
- Cool Blue #4984B8 ΔE 0.064
- Medium Purple #9370DB ΔE 0.065
- Dark Periwinkle #665FD1 ΔE 0.066
- Faded Blue #658CBB ΔE 0.067
- Steel Blue #4682B4 ΔE 0.067
Use #6C78CD 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.