#4F77BB#4F77BB

#4F77BB is a mid, moderate blue. Relative luminance 0.184; OKLCH L 57.1% C 0.115 H 260.5°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#4F77BB
RGB	rgb(79, 119, 187)
HSL	hsl(218, 44%, 52%)
HSV	hsv(218, 58%, 73%)
CMYK	cmyk(57.8%, 36.4%, 0%, 26.7%)
CIE-LAB	lab(50.03, 6.66, -40.02)
CIE-LCH	lch(50.03, 40.57, 279.44°)
OKLab	oklab(57.12% -0.019 -0.1133)
OKLCH	oklch(57.12% 0.115 260.5)
XYZ	xyz(18.7878, 18.4422, 49.5737)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F77BB #BB934F

analogous

#4FADBB #4F77BB #5D4FBB

triadic

#4F77BB #BB4F77 #77BB4F

tetradic

#4F77BB #BB4FAD #BB934F #4FBB5D

square

#4F77BB #BB4FAD #BB934F #4FBB5D

split-complementary

#4F77BB #BB5D4F #ADBB4F

monochromatic

#284068 #395B94 #4F77BB #7B99CC #A7BBDD

Accessibility & contrast

On white

4.48

#4F77BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#4F77BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F77BB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F77BB	#FFFFFF	#000000	##000000
##4F77BB	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7CBE

Deuteranopia (green-blind)

#4D72BA

Tritanopia (blue-blind)

#008690

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4f77bb;
/* rgb */ color: rgb(79, 119, 187);
/* oklch */ color: oklch(57.1% 0.115 260.5);

Tailwind

colors: {
  custom: {
    50: '#899dd0',
    500: '#4f77bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f77bb;
$custom-light: #899dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f77bb",
  "rgb": {
    "r": 79,
    "g": 119,
    "b": 187
  },
  "hsl": {
    "h": 217.778,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57115,
    "c": 0.11487,
    "h": 260.5
  },
  "luminance": 0.18444
}

Semantic roles & 50–950 ramp

primary

#4F77BB

secondary

#CAB99B

accent

#A554D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4F77BB

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

Preview Lab → · Contrast checker → · Palette generator →