#4F81CF#4F81CF

#4F81CF is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.4% C 0.131 H 259.0°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#4F81CF
RGB	rgb(79, 129, 207)
HSL	hsl(217, 57%, 56%)
HSV	hsv(217, 62%, 81%)
CMYK	cmyk(61.8%, 37.7%, 0%, 18.8%)
CIE-LAB	lab(53.88, 7.31, -45.34)
CIE-LCH	lch(53.88, 45.92, 279.16°)
OKLab	oklab(60.45% -0.0251 -0.1287)
OKLCH	oklch(60.45% 0.131 259)
XYZ	xyz(22.3332, 21.8657, 62.0630)
Luminance	0.2187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F81CF #CF9D4F

analogous

#4FC1CF #4F81CF #5D4FCF

triadic

#4F81CF #CF4F81 #81CF4F

tetradic

#4F81CF #CF4FC1 #CF9D4F #4FCF5D

square

#4F81CF #CF4FC1 #CF9D4F #4FCF5D

split-complementary

#4F81CF #CF5D4F #C1CF4F

monochromatic

#234881 #3062B1 #4F81CF #7FA3DC #AFC6E9

Accessibility & contrast

On white

3.91

#4F81CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#4F81CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F81CF

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F81CF	#FFFFFF	#000000	##000000
##4F81CF	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F87D2

Deuteranopia (green-blind)

#4E7BCD

Tritanopia (blue-blind)

#00939E

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4f81cf;
/* rgb */ color: rgb(79, 129, 207);
/* oklch */ color: oklch(60.4% 0.131 259.0);

Tailwind

colors: {
  custom: {
    50: '#8ba5de',
    500: '#4f81cf',
    950: '#000000',
  },
}

SCSS

$custom: #4f81cf;
$custom-light: #8ba5de;
$custom-dark: #000000;

JSON

{
  "hex": "#4f81cf",
  "rgb": {
    "r": 79,
    "g": 129,
    "b": 207
  },
  "hsl": {
    "h": 216.563,
    "s": 57.143,
    "l": 56.078
  },
  "oklch": {
    "l": 0.60449,
    "c": 0.13114,
    "h": 259
  },
  "luminance": 0.21868
}

Semantic roles & 50–950 ramp

primary

#4F81CF

secondary

#D7C3A2

accent

#A547E0

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #4F81CF

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

Preview Lab → · Contrast checker → · Palette generator →