#4379DF#4379DF

#4379DF is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.2% C 0.166 H 261.7°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#4379DF
RGB	rgb(67, 121, 223)
HSL	hsl(219, 71%, 57%)
HSV	hsv(219, 70%, 87%)
CMYK	cmyk(70%, 45.7%, 0%, 12.5%)
CIE-LAB	lab(52.06, 15.81, -57.32)
CIE-LCH	lch(52.06, 59.46, 285.42°)
OKLab	oklab(59.19% -0.0238 -0.1642)
OKLCH	oklch(59.19% 0.166 261.7)
XYZ	xyz(22.4666, 20.1934, 72.5114)
Luminance	0.2020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4379DF #DFA943

analogous

#43C7DF #4379DF #5B43DF

triadic

#4379DF #DF4379 #79DF43

tetradic

#4379DF #DF43C7 #DFA943 #43DF5B

square

#4379DF #DF43C7 #DFA943 #43DF5B

split-complementary

#4379DF #DF5B43 #C7DF43

monochromatic

#18428F #2159C4 #4379DF #779EE8 #ACC4F1

Accessibility & contrast

On white

4.17

#4379DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#4379DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4379DF

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4379DF	#FFFFFF	#000000	##000000
##4379DF	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4484E3

Deuteranopia (green-blind)

#2375DD

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4379df;
/* rgb */ color: rgb(67, 121, 223);
/* oklch */ color: oklch(59.2% 0.166 261.7);

Tailwind

colors: {
  custom: {
    50: '#899fe9',
    500: '#4379df',
    950: '#000000',
  },
}

SCSS

$custom: #4379df;
$custom-light: #899fe9;
$custom-dark: #000000;

JSON

{
  "hex": "#4379df",
  "rgb": {
    "r": 67,
    "g": 121,
    "b": 223
  },
  "hsl": {
    "h": 219.231,
    "s": 70.909,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59186,
    "c": 0.16591,
    "h": 261.7
  },
  "luminance": 0.20196
}

Semantic roles & 50–950 ramp

primary

#4379DF

secondary

#DFC99F

accent

#B03AEE

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4379DF

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

Preview Lab → · Contrast checker → · Palette generator →