#557BDB#557BDB

#557BDB is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.2% C 0.152 H 265.8°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#557BDB
RGB	rgb(85, 123, 219)
HSL	hsl(223, 65%, 60%)
HSV	hsv(223, 61%, 86%)
CMYK	cmyk(61.2%, 43.8%, 0%, 14.1%)
CIE-LAB	lab(53.18, 16.13, -53.22)
CIE-LCH	lch(53.18, 55.61, 286.86°)
OKLab	oklab(60.2% -0.0112 -0.1518)
OKLCH	oklch(60.2% 0.152 265.8)
XYZ	xyz(23.6111, 21.2096, 69.8537)
Luminance	0.2121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BDB #DBB555

analogous

#55BEDB #557BDB #7255DB

triadic

#557BDB #DB557B #7BDB55

tetradic

#557BDB #DB55BE #DBB555 #55DB72

square

#557BDB #DB55BE #DBB555 #55DB72

split-complementary

#557BDB #DB7255 #BEDB55

monochromatic

#204196 #2A57C8 #557BDB #88A2E6 #BAC9F0

Accessibility & contrast

On white

4.01

#557BDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#557BDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BDB

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BDB	#FFFFFF	#000000	##000000
##557BDB	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F85DF

Deuteranopia (green-blind)

#3A79D9

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557bdb;
/* rgb */ color: rgb(85, 123, 219);
/* oklch */ color: oklch(60.2% 0.152 265.8);

Tailwind

colors: {
  custom: {
    50: '#90a0e7',
    500: '#557bdb',
    950: '#000000',
  },
}

SCSS

$custom: #557bdb;
$custom-light: #90a0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#557bdb",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 219
  },
  "hsl": {
    "h": 222.985,
    "s": 65.049,
    "l": 59.608
  },
  "oklch": {
    "l": 0.60195,
    "c": 0.15221,
    "h": 265.8
  },
  "luminance": 0.21212
}

Semantic roles & 50–950 ramp

primary

#557BDB

secondary

#E0D1AC

accent

#B840E8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BDB

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

Preview Lab → · Contrast checker → · Palette generator →