#557CDB#557CDB

#557CDB is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.4% C 0.151 H 265.4°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#557CDB
RGB	rgb(85, 124, 219)
HSL	hsl(223, 65%, 60%)
HSV	hsv(223, 61%, 86%)
CMYK	cmyk(61.2%, 43.4%, 0%, 14.1%)
CIE-LAB	lab(53.45, 15.52, -52.79)
CIE-LCH	lch(53.45, 55.02, 286.38°)
OKLab	oklab(60.4% -0.0122 -0.1505)
OKLCH	oklch(60.4% 0.151 265.4)
XYZ	xyz(23.7357, 21.4590, 69.8953)
Luminance	0.2146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CDB #DBB455

analogous

#55BFDB #557CDB #7155DB

triadic

#557CDB #DB557C #7CDB55

tetradic

#557CDB #DB55BF #DBB455 #55DB71

square

#557CDB #DB55BF #DBB455 #55DB71

split-complementary

#557CDB #DB7155 #BFDB55

monochromatic

#204296 #2A58C8 #557CDB #88A3E6 #BACAF0

Accessibility & contrast

On white

3.97

#557CDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#557CDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CDB

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CDB	#FFFFFF	#000000	##000000
##557CDB	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5086DF

Deuteranopia (green-blind)

#3C7AD9

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557cdb;
/* rgb */ color: rgb(85, 124, 219);
/* oklch */ color: oklch(60.4% 0.151 265.4);

Tailwind

colors: {
  custom: {
    50: '#90a1e7',
    500: '#557cdb',
    950: '#000000',
  },
}

SCSS

$custom: #557cdb;
$custom-light: #90a1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#557cdb",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 219
  },
  "hsl": {
    "h": 222.537,
    "s": 65.049,
    "l": 59.608
  },
  "oklch": {
    "l": 0.60403,
    "c": 0.15102,
    "h": 265.4
  },
  "luminance": 0.21461
}

Semantic roles & 50–950 ramp

primary

#557CDB

secondary

#E0D1AC

accent

#B740E8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557CDB

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

Preview Lab → · Contrast checker → · Palette generator →