#4B78DF#4B78DF

#4B78DF is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.3% C 0.165 H 264.2°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#4B78DF
RGB	rgb(75, 120, 223)
HSL	hsl(222, 70%, 58%)
HSV	hsv(222, 66%, 87%)
CMYK	cmyk(66.4%, 46.2%, 0%, 12.5%)
CIE-LAB	lab(52.12, 17.64, -57.19)
CIE-LCH	lch(52.12, 59.85, 287.14°)
OKLab	oklab(59.33% -0.0165 -0.1637)
OKLCH	oklch(59.33% 0.165 264.2)
XYZ	xyz(22.9327, 20.2543, 72.4986)
Luminance	0.2026 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B78DF #DFB24B

analogous

#4BC2DF #4B78DF #684BDF

triadic

#4B78DF #DF4B78 #78DF4B

tetradic

#4B78DF #DF4BC2 #DFB24B #4BDF68

square

#4B78DF #DF4BC2 #DFB24B #4BDF68

split-complementary

#4B78DF #DF684B #C2DF4B

monochromatic

#1B4095 #2456C9 #4B78DF #7F9FE8 #B3C6F1

Accessibility & contrast

On white

4.16

#4B78DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#4B78DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B78DF

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B78DF	#FFFFFF	#000000	##000000
##4B78DF	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4484E3

Deuteranopia (green-blind)

#2676DD

Tritanopia (blue-blind)

#0090A1

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4b78df;
/* rgb */ color: rgb(75, 120, 223);
/* oklch */ color: oklch(59.3% 0.165 264.2);

Tailwind

colors: {
  custom: {
    50: '#8c9ee9',
    500: '#4b78df',
    950: '#000000',
  },
}

SCSS

$custom: #4b78df;
$custom-light: #8c9ee9;
$custom-dark: #000000;

JSON

{
  "hex": "#4b78df",
  "rgb": {
    "r": 75,
    "g": 120,
    "b": 223
  },
  "hsl": {
    "h": 221.757,
    "s": 69.811,
    "l": 58.431
  },
  "oklch": {
    "l": 0.59332,
    "c": 0.16452,
    "h": 264.2
  },
  "luminance": 0.20257
}

Semantic roles & 50–950 ramp

primary

#4B78DF

secondary

#E0CEA6

accent

#B73BED

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4B78DF

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

Preview Lab → · Contrast checker → · Palette generator →