#4E78CC#4E78CC

#4E78CC is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.3% C 0.138 H 262.8°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#4E78CC
RGB	rgb(78, 120, 204)
HSL	hsl(220, 55%, 55%)
HSV	hsv(220, 62%, 80%)
CMYK	cmyk(61.8%, 41.2%, 0%, 20%)
CIE-LAB	lab(51.16, 11.58, -47.96)
CIE-LCH	lch(51.16, 49.34, 283.58°)
OKLab	oklab(58.28% -0.0172 -0.1365)
OKLCH	oklch(58.28% 0.138 262.8)
XYZ	xyz(20.7536, 19.4104, 59.7679)
Luminance	0.1941 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E78CC #CCA24E

analogous

#4EB7CC #4E78CC #634ECC

triadic

#4E78CC #CC4E78 #78CC4E

tetradic

#4E78CC #CC4EB7 #CCA24E #4ECC63

square

#4E78CC #CC4EB7 #CCA24E #4ECC63

split-complementary

#4E78CC #CC634E #B7CC4E

monochromatic

#24417C #315AAB #4E78CC #7E9CDA #ADC0E7

Accessibility & contrast

On white

4.30

#4E78CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#4E78CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4E78CC

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E78CC	#FFFFFF	#000000	##000000
##4E78CC	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5380CF

Deuteranopia (green-blind)

#4075CA

Tritanopia (blue-blind)

#008B98

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4e78cc;
/* rgb */ color: rgb(78, 120, 204);
/* oklch */ color: oklch(58.3% 0.138 262.8);

Tailwind

colors: {
  custom: {
    50: '#8b9edc',
    500: '#4e78cc',
    950: '#000000',
  },
}

SCSS

$custom: #4e78cc;
$custom-light: #8b9edc;
$custom-dark: #000000;

JSON

{
  "hex": "#4e78cc",
  "rgb": {
    "r": 78,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 220,
    "s": 55.263,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58276,
    "c": 0.1376,
    "h": 262.8
  },
  "luminance": 0.19412
}

Semantic roles & 50–950 ramp

primary

#4E78CC

secondary

#D5C4A1

accent

#AD49DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #4E78CC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →