#4B78CF#4B78CF

#4B78CF is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.3% C 0.143 H 262.3°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#4B78CF
RGB	rgb(75, 120, 207)
HSL	hsl(220, 58%, 55%)
HSV	hsv(220, 64%, 81%)
CMYK	cmyk(63.8%, 42%, 0%, 18.8%)
CIE-LAB	lab(51.19, 12.07, -49.63)
CIE-LCH	lch(51.19, 51.08, 283.67°)
OKLab	oklab(58.31% -0.0192 -0.1415)
OKLCH	oklch(58.31% 0.143 262.3)
XYZ	xyz(20.8767, 19.4318, 61.6699)
Luminance	0.1943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B78CF #CFA24B

analogous

#4BBACF #4B78CF #604BCF

triadic

#4B78CF #CF4B78 #78CF4B

tetradic

#4B78CF #CF4BBA #CFA24B #4BCF60

square

#4B78CF #CF4BBA #CFA24B #4BCF60

split-complementary

#4B78CF #CF604B #BACF4B

monochromatic

#22417E #2E5AAE #4B78CF #7B9CDC #ACC0E9

Accessibility & contrast

On white

4.30

#4B78CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#4B78CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B78CF

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B78CF	#FFFFFF	#000000	##000000
##4B78CF	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5080D2

Deuteranopia (green-blind)

#3C74CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4b78cf;
/* rgb */ color: rgb(75, 120, 207);
/* oklch */ color: oklch(58.3% 0.143 262.3);

Tailwind

colors: {
  custom: {
    50: '#8a9ede',
    500: '#4b78cf',
    950: '#000000',
  },
}

SCSS

$custom: #4b78cf;
$custom-light: #8a9ede;
$custom-dark: #000000;

JSON

{
  "hex": "#4b78cf",
  "rgb": {
    "r": 75,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 219.545,
    "s": 57.895,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58311,
    "c": 0.14279,
    "h": 262.3
  },
  "luminance": 0.19434
}

Semantic roles & 50–950 ramp

primary

#4B78CF

secondary

#D6C49F

accent

#AC47E1

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #4B78CF

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

Preview Lab → · Contrast checker → · Palette generator →