#4557BC#4557BC

#4557BC is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.9% C 0.159 H 271.8°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#4557BC
RGB	rgb(69, 87, 188)
HSL	hsl(231, 47%, 50%)
HSV	hsv(231, 63%, 74%)
CMYK	cmyk(63.3%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(40.75, 25.19, -55.46)
CIE-LCH	lch(40.75, 60.91, 294.43°)
OKLab	oklab(49.89% 0.005 -0.1592)
OKLCH	oklch(49.89% 0.159 271.8)
XYZ	xyz(14.9365, 11.7112, 49.0406)
Luminance	0.1171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4557BC #BCAA45

analogous

#4593BC #4557BC #6E45BC

triadic

#4557BC #BC4557 #57BC45

tetradic

#4557BC #BC4593 #BCAA45 #45BC6E

square

#4557BC #BC4593 #BCAA45 #45BC6E

split-complementary

#4557BC #BC6E45 #93BC45

monochromatic

#242D63 #344290 #4557BC #7280CC #9FA8DC

Accessibility & contrast

On white

6.28

#4557BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#4557BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4557BC

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4557BC	#FFFFFF	#000000	##FFFFFF
##4557BC	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1366C0

Deuteranopia (green-blind)

#005BBA

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4557bc;
/* rgb */ color: rgb(69, 87, 188);
/* oklch */ color: oklch(49.9% 0.159 271.8);

Tailwind

colors: {
  custom: {
    50: '#8586d1',
    500: '#4557bc',
    950: '#000000',
  },
}

SCSS

$custom: #4557bc;
$custom-light: #8586d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4557bc",
  "rgb": {
    "r": 69,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 230.924,
    "s": 47.036,
    "l": 50.392
  },
  "oklch": {
    "l": 0.49888,
    "c": 0.15925,
    "h": 271.8
  },
  "luminance": 0.11712
}

Semantic roles & 50–950 ramp

primary

#4557BC

secondary

#C9C194

accent

#C251D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4557BC

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

Preview Lab → · Contrast checker → · Palette generator →