#545BB1#545BB1

#545BB1 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.9% C 0.134 H 277.0°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#545BB1
RGB	rgb(84, 91, 177)
HSL	hsl(235, 37%, 51%)
HSV	hsv(235, 53%, 69%)
CMYK	cmyk(52.5%, 48.6%, 0%, 30.6%)
CIE-LAB	lab(42.06, 21.90, -46.85)
CIE-LCH	lch(42.06, 51.72, 295.06°)
OKLab	oklab(50.9% 0.0164 -0.1335)
OKLCH	oklch(50.9% 0.134 277)
XYZ	xyz(15.3306, 12.5404, 43.1992)
Luminance	0.1254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#545BB1 #B1AA54

analogous

#5489B1 #545BB1 #7B54B1

triadic

#545BB1 #B1545B #5BB154

tetradic

#545BB1 #B15489 #B1AA54 #54B17B

square

#545BB1 #B15489 #B1AA54 #54B17B

split-complementary

#545BB1 #B17B54 #89B154

monochromatic

#2B2F5F #3F4489 #545BB1 #7E83C4 #A8ACD7

Accessibility & contrast

On white

5.99

#545BB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#545BB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #545BB1

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##545BB1	#FFFFFF	#000000	##FFFFFF
##545BB1	1.00	5.99	3.51	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3367B4

Deuteranopia (green-blind)

#2960AF

Tritanopia (blue-blind)

#2C6E7D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #545bb1;
/* rgb */ color: rgb(84, 91, 177);
/* oklch */ color: oklch(50.9% 0.134 277.0);

Tailwind

colors: {
  custom: {
    50: '#8b89c9',
    500: '#545bb1',
    950: '#000000',
  },
}

SCSS

$custom: #545bb1;
$custom-light: #8b89c9;
$custom-dark: #000000;

JSON

{
  "hex": "#545bb1",
  "rgb": {
    "r": 84,
    "g": 91,
    "b": 177
  },
  "hsl": {
    "h": 235.484,
    "s": 37.349,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50899,
    "c": 0.13446,
    "h": 277
  },
  "luminance": 0.12541
}

Semantic roles & 50–950 ramp

primary

#545BB1

secondary

#C5C29C

accent

#C55ACD

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #545BB1

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

Preview Lab → · Contrast checker → · Palette generator →