#557BDC#557BDC

#557BDC is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.3% C 0.154 H 265.9°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#557BDC
RGB	rgb(85, 123, 220)
HSL	hsl(223, 66%, 60%)
HSV	hsv(223, 61%, 86%)
CMYK	cmyk(61.4%, 44.1%, 0%, 13.7%)
CIE-LAB	lab(53.24, 16.47, -53.69)
CIE-LCH	lch(53.24, 56.16, 287.05°)
OKLab	oklab(60.26% -0.0111 -0.1532)
OKLCH	oklch(60.26% 0.154 265.9)
XYZ	xyz(23.7431, 21.2624, 70.5491)
Luminance	0.2127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BDC #DCB655

analogous

#55BFDC #557BDC #7255DC

triadic

#557BDC #DC557B #7BDC55

tetradic

#557BDC #DC55BF #DCB655 #55DC72

square

#557BDC #DC55BF #DCB655 #55DC72

split-complementary

#557BDC #DC7255 #BFDC55

monochromatic

#1F4197 #2A57CA #557BDC #88A2E6 #BBCAF1

Accessibility & contrast

On white

4.00

#557BDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#557BDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BDC

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BDC	#FFFFFF	#000000	##000000
##557BDC	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E86E0

Deuteranopia (green-blind)

#3979DA

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557bdc;
/* rgb */ color: rgb(85, 123, 220);
/* oklch */ color: oklch(60.3% 0.154 265.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#557bdc",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 220
  },
  "hsl": {
    "h": 223.111,
    "s": 65.854,
    "l": 59.804
  },
  "oklch": {
    "l": 0.60258,
    "c": 0.15358,
    "h": 265.9
  },
  "luminance": 0.21265
}

Semantic roles & 50–950 ramp

primary

#557BDC

secondary

#E0D2AC

accent

#B93FE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BDC

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

Preview Lab → · Contrast checker → · Palette generator →