#4078DF#4078DF

#4078DF is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.9% C 0.168 H 261.4°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#4078DF
RGB	rgb(64, 120, 223)
HSL	hsl(219, 71%, 56%)
HSV	hsv(219, 71%, 87%)
CMYK	cmyk(71.3%, 46.2%, 0%, 12.5%)
CIE-LAB	lab(51.67, 16.01, -57.95)
CIE-LCH	lch(51.67, 60.12, 285.44°)
OKLab	oklab(58.85% -0.0252 -0.1661)
OKLCH	oklch(58.85% 0.168 261.4)
XYZ	xyz(22.1453, 19.8483, 72.4617)
Luminance	0.1985 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4078DF #DFA740

analogous

#40C8DF #4078DF #5840DF

triadic

#4078DF #DF4078 #78DF40

tetradic

#4078DF #DF40C8 #DFA740 #40DF58

square

#4078DF #DF40C8 #DFA740 #40DF58

split-complementary

#4078DF #DF5840 #C8DF40

monochromatic

#18418D #2059C1 #4078DF #749DE8 #A9C2F1

Accessibility & contrast

On white

4.23

#4078DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#4078DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4078DF

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4078DF	#FFFFFF	#000000	##000000
##4078DF	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4283E3

Deuteranopia (green-blind)

#1D74DD

Tritanopia (blue-blind)

#0090A1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4078df;
/* rgb */ color: rgb(64, 120, 223);
/* oklch */ color: oklch(58.9% 0.168 261.4);

Tailwind

colors: {
  custom: {
    50: '#889eea',
    500: '#4078df',
    950: '#000000',
  },
}

SCSS

$custom: #4078df;
$custom-light: #889eea;
$custom-dark: #000000;

JSON

{
  "hex": "#4078df",
  "rgb": {
    "r": 64,
    "g": 120,
    "b": 223
  },
  "hsl": {
    "h": 218.868,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.58854,
    "c": 0.16802,
    "h": 261.4
  },
  "luminance": 0.19851
}

Semantic roles & 50–950 ramp

primary

#4078DF

secondary

#DEC79D

accent

#AF3AEE

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4078DF

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

Preview Lab → · Contrast checker → · Palette generator →