#557DCB#557DCB

#557DCB is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.7% C 0.128 H 262.6°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#557DCB
RGB	rgb(85, 125, 203)
HSL	hsl(220, 53%, 56%)
HSV	hsv(220, 58%, 80%)
CMYK	cmyk(58.1%, 38.4%, 0%, 20.4%)
CIE-LAB	lab(52.85, 9.56, -44.69)
CIE-LCH	lch(52.85, 45.70, 282.07°)
OKLab	oklab(59.66% -0.0164 -0.1268)
OKLCH	oklch(59.66% 0.128 262.6)
XYZ	xyz(21.8557, 20.9085, 59.3723)
Luminance	0.2091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DCB #CBA355

analogous

#55B8CB #557DCB #6855CB

triadic

#557DCB #CB557D #7DCB55

tetradic

#557DCB #CB55B8 #CBA355 #55CB68

square

#557DCB #CB55B8 #CBA355 #55CB68

split-complementary

#557DCB #CB6855 #B8CB55

monochromatic

#27457F #355EAE #557DCB #84A1D9 #B3C5E8

Accessibility & contrast

On white

4.05

#557DCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#557DCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DCB

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DCB	#FFFFFF	#000000	##000000
##557DCB	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C84CE

Deuteranopia (green-blind)

#4D79C9

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557dcb;
/* rgb */ color: rgb(85, 125, 203);
/* oklch */ color: oklch(59.7% 0.128 262.6);

Tailwind

colors: {
  custom: {
    50: '#8ea2db',
    500: '#557dcb',
    950: '#000000',
  },
}

SCSS

$custom: #557dcb;
$custom-light: #8ea2db;
$custom-dark: #000000;

JSON

{
  "hex": "#557dcb",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 203
  },
  "hsl": {
    "h": 219.661,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59657,
    "c": 0.12782,
    "h": 262.6
  },
  "luminance": 0.2091
}

Semantic roles & 50–950 ramp

primary

#557DCB

secondary

#D6C6A6

accent

#AB4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #557DCB

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

Preview Lab → · Contrast checker → · Palette generator →