#557BC4#557BC4

#557BC4 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 58.8% C 0.120 H 262.4°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#557BC4
RGB	rgb(85, 123, 196)
HSL	hsl(219, 48%, 55%)
HSV	hsv(219, 57%, 77%)
CMYK	cmyk(56.6%, 37.2%, 0%, 23.1%)
CIE-LAB	lab(51.93, 8.46, -42.16)
CIE-LCH	lch(51.93, 43.00, 281.35°)
OKLab	oklab(58.83% -0.0158 -0.1194)
OKLCH	oklch(58.83% 0.12 262.4)
XYZ	xyz(20.7897, 20.0811, 54.9943)
Luminance	0.2008 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BC4 #C49E55

analogous

#55B3C4 #557BC4 #6655C4

triadic

#557BC4 #C4557B #7BC455

tetradic

#557BC4 #C455B3 #C49E55 #55C466

square

#557BC4 #C455B3 #C49E55 #55C466

split-complementary

#557BC4 #C46655 #B3C455

monochromatic

#294376 #395DA3 #557BC4 #829ED4 #B0C2E4

Accessibility & contrast

On white

4.19

#557BC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#557BC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BC4

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BC4	#FFFFFF	#000000	##000000
##557BC4	1.00	4.19	5.02	5.02
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D81C7

Deuteranopia (green-blind)

#4F77C2

Tritanopia (blue-blind)

#018B96

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557bc4;
/* rgb */ color: rgb(85, 123, 196);
/* oklch */ color: oklch(58.8% 0.120 262.4);

Tailwind

colors: {
  custom: {
    50: '#8da0d6',
    500: '#557bc4',
    950: '#000000',
  },
}

SCSS

$custom: #557bc4;
$custom-light: #8da0d6;
$custom-dark: #000000;

JSON

{
  "hex": "#557bc4",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 196
  },
  "hsl": {
    "h": 219.459,
    "s": 48.472,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58825,
    "c": 0.12042,
    "h": 262.4
  },
  "luminance": 0.20083
}

Semantic roles & 50–950 ramp

primary

#557BC4

secondary

#D2C2A3

accent

#A950D8

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #557BC4

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

Preview Lab → · Contrast checker → · Palette generator →