#4F81CE#4F81CE

#4F81CE is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.4% C 0.130 H 258.8°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#4F81CE
RGB	rgb(79, 129, 206)
HSL	hsl(216, 56%, 56%)
HSV	hsv(216, 62%, 81%)
CMYK	cmyk(61.7%, 37.4%, 0%, 19.2%)
CIE-LAB	lab(53.83, 6.97, -44.85)
CIE-LCH	lch(53.83, 45.39, 278.84°)
OKLab	oklab(60.39% -0.0253 -0.1273)
OKLCH	oklch(60.39% 0.13 258.8)
XYZ	xyz(22.2113, 21.8170, 61.4211)
Luminance	0.2182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F81CE #CE9C4F

analogous

#4FC0CE #4F81CE #5C4FCE

triadic

#4F81CE #CE4F81 #81CE4F

tetradic

#4F81CE #CE4FC0 #CE9C4F #4FCE5C

square

#4F81CE #CE4FC0 #CE9C4F #4FCE5C

split-complementary

#4F81CE #CE5C4F #C0CE4F

monochromatic

#23487F #3162AF #4F81CE #7FA3DB #AFC6E9

Accessibility & contrast

On white

3.92

#4F81CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#4F81CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F81CE

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F81CE	#FFFFFF	#000000	##000000
##4F81CE	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6087D1

Deuteranopia (green-blind)

#4E7BCC

Tritanopia (blue-blind)

#00929E

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4f81ce;
/* rgb */ color: rgb(79, 129, 206);
/* oklch */ color: oklch(60.4% 0.130 258.8);

Tailwind

colors: {
  custom: {
    50: '#8ba5dd',
    500: '#4f81ce',
    950: '#000000',
  },
}

SCSS

$custom: #4f81ce;
$custom-light: #8ba5dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4f81ce",
  "rgb": {
    "r": 79,
    "g": 129,
    "b": 206
  },
  "hsl": {
    "h": 216.378,
    "s": 56.444,
    "l": 55.882
  },
  "oklch": {
    "l": 0.60392,
    "c": 0.12979,
    "h": 258.8
  },
  "luminance": 0.21819
}

Semantic roles & 50–950 ramp

primary

#4F81CE

secondary

#D7C2A2

accent

#A448E0

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #4F81CE

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

Preview Lab → · Contrast checker → · Palette generator →