#4551BB#4551BB

#4551BB is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.7% C 0.166 H 273.7°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#4551BB
RGB	rgb(69, 81, 187)
HSL	hsl(234, 46%, 50%)
HSV	hsv(234, 63%, 73%)
CMYK	cmyk(63.1%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(39.13, 28.68, -57.49)
CIE-LCH	lch(39.13, 64.25, 296.51°)
OKLab	oklab(48.65% 0.0106 -0.1652)
OKLCH	oklch(48.65% 0.166 273.7)
XYZ	xyz(14.3633, 10.7367, 48.3195)
Luminance	0.1074 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4551BB #BBAF45

analogous

#458CBB #4551BB #7445BB

triadic

#4551BB #BB4551 #51BB45

tetradic

#4551BB #BB458C #BBAF45 #45BB74

square

#4551BB #BB458C #BBAF45 #45BB74

split-complementary

#4551BB #BB7445 #8CBB45

monochromatic

#242A62 #343D8F #4551BB #727BCB #9FA5DC

Accessibility & contrast

On white

6.67

#4551BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#4551BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4551BB

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4551BB	#FFFFFF	#000000	##FFFFFF
##4551BB	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BF

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#006A7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4551bb;
/* rgb */ color: rgb(69, 81, 187);
/* oklch */ color: oklch(48.7% 0.166 273.7);

Tailwind

colors: {
  custom: {
    50: '#8581d0',
    500: '#4551bb',
    950: '#000000',
  },
}

SCSS

$custom: #4551bb;
$custom-light: #8581d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4551bb",
  "rgb": {
    "r": 69,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 233.898,
    "s": 46.457,
    "l": 50.196
  },
  "oklch": {
    "l": 0.48652,
    "c": 0.16558,
    "h": 273.7
  },
  "luminance": 0.10738
}

Semantic roles & 50–950 ramp

primary

#4551BB

secondary

#C8C394

accent

#C952D6

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4551BB

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

Preview Lab → · Contrast checker → · Palette generator →