#4F81CC#4F81CC

#4F81CC is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.3% C 0.127 H 258.3°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#4F81CC
RGB	rgb(79, 129, 204)
HSL	hsl(216, 55%, 55%)
HSV	hsv(216, 61%, 80%)
CMYK	cmyk(61.3%, 36.8%, 0%, 20%)
CIE-LAB	lab(53.73, 6.30, -43.88)
CIE-LCH	lch(53.73, 44.33, 278.17°)
OKLab	oklab(60.28% -0.0258 -0.1245)
OKLCH	oklch(60.28% 0.127 258.3)
XYZ	xyz(21.9699, 21.7204, 60.1497)
Luminance	0.2172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F81CC #CC9A4F

analogous

#4FBFCC #4F81CC #5B4FCC

triadic

#4F81CC #CC4F81 #81CC4F

tetradic

#4F81CC #CC4FBF #CC9A4F #4FCC5B

square

#4F81CC #CC4FBF #CC9A4F #4FCC5B

split-complementary

#4F81CC #CC5B4F #BFCC4F

monochromatic

#24477D #3263AC #4F81CC #7EA3DA #AEC5E7

Accessibility & contrast

On white

3.93

#4F81CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#4F81CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F81CC

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F81CC	#FFFFFF	#000000	##000000
##4F81CC	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6187CF

Deuteranopia (green-blind)

#507BCA

Tritanopia (blue-blind)

#00929D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4f81cc;
/* rgb */ color: rgb(79, 129, 204);
/* oklch */ color: oklch(60.3% 0.127 258.3);

Tailwind

colors: {
  custom: {
    50: '#8ba5dc',
    500: '#4f81cc',
    950: '#000000',
  },
}

SCSS

$custom: #4f81cc;
$custom-light: #8ba5dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4f81cc",
  "rgb": {
    "r": 79,
    "g": 129,
    "b": 204
  },
  "hsl": {
    "h": 216,
    "s": 55.066,
    "l": 55.49
  },
  "oklch": {
    "l": 0.60278,
    "c": 0.1271,
    "h": 258.3
  },
  "luminance": 0.21722
}

Semantic roles & 50–950 ramp

primary

#4F81CC

secondary

#D5C1A1

accent

#A349DE

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #4F81CC

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

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