#557CC9#557CC9

#557CC9 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.3% C 0.126 H 262.8°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#557CC9
RGB	rgb(85, 124, 201)
HSL	hsl(220, 52%, 56%)
HSV	hsv(220, 58%, 79%)
CMYK	cmyk(57.7%, 38.3%, 0%, 21.2%)
CIE-LAB	lab(52.47, 9.50, -44.16)
CIE-LCH	lch(52.47, 45.17, 282.15°)
OKLab	oklab(59.33% -0.0158 -0.1252)
OKLCH	oklch(59.33% 0.126 262.8)
XYZ	xyz(21.4930, 20.5619, 58.0832)
Luminance	0.2056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CC9 #C9A255

analogous

#55B6C9 #557CC9 #6855C9

triadic

#557CC9 #C9557C #7CC955

tetradic

#557CC9 #C955B6 #C9A255 #55C968

square

#557CC9 #C955B6 #C9A255 #55C968

split-complementary

#557CC9 #C96855 #B6C955

monochromatic

#27447C #365DAB #557CC9 #83A0D8 #B2C4E7

Accessibility & contrast

On white

4.11

#557CC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#557CC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CC9

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CC9	#FFFFFF	#000000	##000000
##557CC9	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C83CC

Deuteranopia (green-blind)

#4D78C7

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557cc9;
/* rgb */ color: rgb(85, 124, 201);
/* oklch */ color: oklch(59.3% 0.126 262.8);

Tailwind

colors: {
  custom: {
    50: '#8ea1da',
    500: '#557cc9',
    950: '#000000',
  },
}

SCSS

$custom: #557cc9;
$custom-light: #8ea1da;
$custom-dark: #000000;

JSON

{
  "hex": "#557cc9",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 201
  },
  "hsl": {
    "h": 219.828,
    "s": 51.786,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59326,
    "c": 0.12621,
    "h": 262.8
  },
  "luminance": 0.20564
}

Semantic roles & 50–950 ramp

primary

#557CC9

secondary

#D5C5A5

accent

#AB4DDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557CC9

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

Preview Lab → · Contrast checker → · Palette generator →