#4F81DB#4F81DB

#4F81DB is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.2% C 0.147 H 261.2°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#4F81DB
RGB	rgb(79, 129, 219)
HSL	hsl(219, 66%, 58%)
HSV	hsv(219, 64%, 86%)
CMYK	cmyk(63.9%, 41.1%, 0%, 14.1%)
CIE-LAB	lab(54.53, 11.40, -51.08)
CIE-LCH	lch(54.53, 52.34, 282.58°)
OKLab	oklab(61.16% -0.0225 -0.1456)
OKLCH	oklch(61.16% 0.147 261.2)
XYZ	xyz(23.8564, 22.4750, 70.0850)
Luminance	0.2248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F81DB #DBA94F

analogous

#4FC7DB #4F81DB #634FDB

triadic

#4F81DB #DB4F81 #81DB4F

tetradic

#4F81DB #DB4FC7 #DBA94F #4FDB63

square

#4F81DB #DB4FC7 #DBA94F #4FDB63

split-complementary

#4F81DB #DB634F #C7DB4F

monochromatic

#1E4792 #2860C5 #4F81DB #82A5E5 #B5CAF0

Accessibility & contrast

On white

3.82

#4F81DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#4F81DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F81DB

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F81DB	#FFFFFF	#000000	##000000
##4F81DB	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5889DF

Deuteranopia (green-blind)

#437CD9

Tritanopia (blue-blind)

#0096A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4f81db;
/* rgb */ color: rgb(79, 129, 219);
/* oklch */ color: oklch(61.2% 0.147 261.2);

Tailwind

colors: {
  custom: {
    50: '#8da5e6',
    500: '#4f81db',
    950: '#000000',
  },
}

SCSS

$custom: #4f81db;
$custom-light: #8da5e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4f81db",
  "rgb": {
    "r": 79,
    "g": 129,
    "b": 219
  },
  "hsl": {
    "h": 218.571,
    "s": 66.038,
    "l": 58.431
  },
  "oklch": {
    "l": 0.61157,
    "c": 0.14728,
    "h": 261.2
  },
  "luminance": 0.22477
}

Semantic roles & 50–950 ramp

primary

#4F81DB

secondary

#DFCBA7

accent

#AC3FE9

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4F81DB

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

Preview Lab → · Contrast checker → · Palette generator →