#5D78DC
Closest named color: Cornflower (#6A79F7). oklch(60.1% 0.155 269.9), rgb(93, 120, 220).
Aa
Black text reads best on this color (5.18:1).
About this color
#5D78DC is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.155 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.044 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #5D78DC |
| RGB | rgb(93, 120, 220) |
| HSL | hsl(227, 64%, 61%) |
| OKLCH | oklch(60.1% 0.155 269.9) |
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 #5D78DC | 4.04:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #5D78DC | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #5D78DC text on white | 4.04:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #5D78DC text on black | 5.18:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ADBFF2
oklch(80.9% 0.075 269.5)
-
Step 400
400
#839CEC
oklch(70.7% 0.121 269.9)
-
Step 500
500 (this color)
#5D78DC
oklch(60.1% 0.155 269.9)
-
Step 600
600
#4E68D4
oklch(55.5% 0.168 270)
-
Step 700
700
#3F56B8
oklch(49% 0.157 269.8)
-
Step 800
800
#344795
oklch(42.7% 0.13 269.8)
-
Step 900
900
#2D3C77
oklch(37.6% 0.102 270.2)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#5D78DC 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) | #4A84E0 | 0.034 |
| Deuteranopia (no green cones) | #3779DA | 0.037 |
| Tritanopia (no blue cones) | #008E9F | 0.137 |
| Achromatopsia (no color) | #7E7E7E | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D78DC
#5D78DC
oklch(60.1% 0.155 269.9)
- #9D7C00
#9D7C00
oklch(60.1% 0.123 90)
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 #5D78DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.044
- Soft Blue #6488EA ΔE 0.046
- Royal Blue #4169E1 ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.058
- Windows Blue #3778BF ΔE 0.061
- Medium Slate Blue #7B68EE ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.062
- Clear Blue #247AFD ΔE 0.066
Use #5D78DC 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.