#4F81BB#4F81BB

#4F81BB is a mid, moderate cyan. Relative luminance 0.210; OKLCH L 59.4% C 0.105 H 253.2°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#4F81BB
RGB	rgb(79, 129, 187)
HSL	hsl(212, 44%, 52%)
HSV	hsv(212, 58%, 73%)
CMYK	cmyk(57.8%, 31%, 0%, 26.7%)
CIE-LAB	lab(52.89, 0.64, -35.51)
CIE-LCH	lch(52.89, 35.52, 271.04°)
OKLab	oklab(59.35% -0.0303 -0.1001)
OKLCH	oklch(59.35% 0.105 253.2)
XYZ	xyz(20.0412, 20.9489, 49.9915)
Luminance	0.2095 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F81BB #BB894F

analogous

#4FB7BB #4F81BB #534FBB

triadic

#4F81BB #BB4F81 #81BB4F

tetradic

#4F81BB #BB4FB7 #BB894F #4FBB53

square

#4F81BB #BB4FB7 #BB894F #4FBB53

split-complementary

#4F81BB #BB534F #B7BB4F

monochromatic

#284568 #396394 #4F81BB #7BA1CC #A7C0DD

Accessibility & contrast

On white

4.05

#4F81BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#4F81BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F81BB

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F81BB	#FFFFFF	#000000	##000000
##4F81BB	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6984BE

Deuteranopia (green-blind)

#5B7ABA

Tritanopia (blue-blind)

#008E96

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4f81bb;
/* rgb */ color: rgb(79, 129, 187);
/* oklch */ color: oklch(59.4% 0.105 253.2);

Tailwind

colors: {
  custom: {
    50: '#89a5cf',
    500: '#4f81bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f81bb;
$custom-light: #89a5cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4f81bb",
  "rgb": {
    "r": 79,
    "g": 129,
    "b": 187
  },
  "hsl": {
    "h": 212.222,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.59352,
    "c": 0.10455,
    "h": 253.2
  },
  "luminance": 0.20951
}

Semantic roles & 50–950 ramp

primary

#4F81BB

secondary

#CAB59B

accent

#9954D4

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4F81BB

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

Preview Lab → · Contrast checker → · Palette generator →