#4F81DC#4F81DC

#4F81DC is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.2% C 0.149 H 261.4°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#4F81DC
RGB	rgb(79, 129, 220)
HSL	hsl(219, 67%, 59%)
HSV	hsv(219, 64%, 86%)
CMYK	cmyk(64.1%, 41.4%, 0%, 13.7%)
CIE-LAB	lab(54.58, 11.74, -51.56)
CIE-LCH	lch(54.58, 52.88, 282.83°)
OKLab	oklab(61.22% -0.0223 -0.1469)
OKLCH	oklch(61.22% 0.149 261.4)
XYZ	xyz(23.9884, 22.5278, 70.7804)
Luminance	0.2253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F81DC #DCAA4F

analogous

#4FC8DC #4F81DC #634FDC

triadic

#4F81DC #DC4F81 #81DC4F

tetradic

#4F81DC #DC4FC8 #DCAA4F #4FDC63

square

#4F81DC #DC4FC8 #DCAA4F #4FDC63

split-complementary

#4F81DC #DC634F #C8DC4F

monochromatic

#1D4793 #2760C6 #4F81DC #82A6E6 #B5CAF0

Accessibility & contrast

On white

3.81

#4F81DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#4F81DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F81DC

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F81DC	#FFFFFF	#000000	##000000
##4F81DC	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#578AE0

Deuteranopia (green-blind)

#427DDA

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4f81dc;
/* rgb */ color: rgb(79, 129, 220);
/* oklch */ color: oklch(61.2% 0.149 261.4);

Tailwind

colors: {
  custom: {
    50: '#8da5e7',
    500: '#4f81dc',
    950: '#000000',
  },
}

SCSS

$custom: #4f81dc;
$custom-light: #8da5e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4f81dc",
  "rgb": {
    "r": 79,
    "g": 129,
    "b": 220
  },
  "hsl": {
    "h": 218.723,
    "s": 66.825,
    "l": 58.627
  },
  "oklch": {
    "l": 0.61217,
    "c": 0.14863,
    "h": 261.4
  },
  "luminance": 0.2253
}

Semantic roles & 50–950 ramp

primary

#4F81DC

secondary

#DFCCA8

accent

#AD3EEA

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4F81DC

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

Preview Lab → · Contrast checker → · Palette generator →