#4F77CB#4F77CB

#4F77CB is a mid, vivid blue. Relative luminance 0.192; OKLCH L 58.1% C 0.137 H 263.5°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#4F77CB
RGB	rgb(79, 119, 203)
HSL	hsl(221, 54%, 55%)
HSV	hsv(221, 61%, 80%)
CMYK	cmyk(61.1%, 41.4%, 0%, 20.4%)
CIE-LAB	lab(50.88, 12.05, -47.84)
CIE-LCH	lch(50.88, 49.33, 284.13°)
OKLab	oklab(58.05% -0.0155 -0.1361)
OKLCH	oklch(58.05% 0.137 263.5)
XYZ	xyz(20.5970, 19.1659, 59.1023)
Luminance	0.1917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F77CB #CBA34F

analogous

#4FB5CB #4F77CB #654FCB

triadic

#4F77CB #CB4F77 #77CB4F

tetradic

#4F77CB #CB4FB5 #CBA34F #4FCB65

square

#4F77CB #CB4FB5 #CBA34F #4FCB65

split-complementary

#4F77CB #CB654F #B5CB4F

monochromatic

#24407B #3259AA #4F77CB #7E9CD9 #ADC0E7

Accessibility & contrast

On white

4.34

#4F77CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#4F77CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F77CB

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F77CB	#FFFFFF	#000000	##000000
##4F77CB	1.00	4.34	4.83	4.83
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#527FCE

Deuteranopia (green-blind)

#4074C9

Tritanopia (blue-blind)

#008A97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4f77cb;
/* rgb */ color: rgb(79, 119, 203);
/* oklch */ color: oklch(58.1% 0.137 263.5);

Tailwind

colors: {
  custom: {
    50: '#8b9ddb',
    500: '#4f77cb',
    950: '#000000',
  },
}

SCSS

$custom: #4f77cb;
$custom-light: #8b9ddb;
$custom-dark: #000000;

JSON

{
  "hex": "#4f77cb",
  "rgb": {
    "r": 79,
    "g": 119,
    "b": 203
  },
  "hsl": {
    "h": 220.645,
    "s": 54.386,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58053,
    "c": 0.13703,
    "h": 263.5
  },
  "luminance": 0.19168
}

Semantic roles & 50–950 ramp

primary

#4F77CB

secondary

#D5C4A1

accent

#AE4ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #4F77CB

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

Preview Lab → · Contrast checker → · Palette generator →