#4C66BB#4C66BB

#4C66BB is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.3% C 0.136 H 268.7°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#4C66BB
RGB	rgb(76, 102, 187)
HSL	hsl(226, 45%, 52%)
HSV	hsv(226, 59%, 73%)
CMYK	cmyk(59.4%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(45.12, 16.60, -47.84)
CIE-LCH	lch(45.12, 50.63, 289.14°)
OKLab	oklab(53.29% -0.0032 -0.1364)
OKLCH	oklch(53.29% 0.136 268.7)
XYZ	xyz(16.6985, 14.6257, 48.9472)
Luminance	0.1463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C66BB #BBA14C

analogous

#4C9EBB #4C66BB #6A4CBB

triadic

#4C66BB #BB4C66 #66BB4C

tetradic

#4C66BB #BB4C9E #BBA14C #4CBB6A

square

#4C66BB #BB4C9E #BBA14C #4CBB6A

split-complementary

#4C66BB #BB6A4C #9EBB4C

monochromatic

#273666 #384D92 #4C66BB #788CCC #A5B2DD

Accessibility & contrast

On white

5.35

#4C66BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#4C66BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4C66BB

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C66BB	#FFFFFF	#000000	##FFFFFF
##4C66BB	1.00	5.35	3.93	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F70BE

Deuteranopia (green-blind)

#2E66B9

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #4c66bb;
/* rgb */ color: rgb(76, 102, 187);
/* oklch */ color: oklch(53.3% 0.136 268.7);

Tailwind

colors: {
  custom: {
    50: '#8791d0',
    500: '#4c66bb',
    950: '#000000',
  },
}

SCSS

$custom: #4c66bb;
$custom-light: #8791d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4c66bb",
  "rgb": {
    "r": 76,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 225.946,
    "s": 44.939,
    "l": 51.569
  },
  "oklch": {
    "l": 0.53285,
    "c": 0.13646,
    "h": 268.7
  },
  "luminance": 0.14627
}

Semantic roles & 50–950 ramp

primary

#4C66BB

secondary

#CABE99

accent

#B653D5

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4C66BB

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

Preview Lab → · Contrast checker → · Palette generator →