#557CB5#557CB5

#557CB5 is a mid, moderate blue. Relative luminance 0.197; OKLCH L 58.2% C 0.099 H 257.8°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#557CB5
RGB	rgb(85, 124, 181)
HSL	hsl(216, 39%, 52%)
HSV	hsv(216, 53%, 71%)
CMYK	cmyk(53%, 31.5%, 0%, 29%)
CIE-LAB	lab(51.48, 3.00, -34.26)
CIE-LCH	lch(51.48, 34.40, 275.01°)
OKLab	oklab(58.23% -0.0209 -0.0964)
OKLCH	oklch(58.23% 0.099 257.8)
XYZ	xyz(19.2916, 19.6813, 46.4894)
Luminance	0.1968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CB5 #B58E55

analogous

#55ACB5 #557CB5 #5E55B5

triadic

#557CB5 #B5557C #7CB555

tetradic

#557CB5 #B555AC #B58E55 #55B55E

square

#557CB5 #B555AC #B58E55 #55B55E

split-complementary

#557CB5 #B55E55 #ACB555

monochromatic

#2C4364 #3E5F8F #557CB5 #809DC8 #AABEDA

Accessibility & contrast

On white

4.25

#557CB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#557CB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CB5

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CB5	#FFFFFF	#000000	##000000
##557CB5	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6580B7

Deuteranopia (green-blind)

#5A77B4

Tritanopia (blue-blind)

#228990

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #557cb5;
/* rgb */ color: rgb(85, 124, 181);
/* oklch */ color: oklch(58.2% 0.099 257.8);

Tailwind

colors: {
  custom: {
    50: '#8ba1cb',
    500: '#557cb5',
    950: '#000000',
  },
}

SCSS

$custom: #557cb5;
$custom-light: #8ba1cb;
$custom-dark: #000000;

JSON

{
  "hex": "#557cb5",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 181
  },
  "hsl": {
    "h": 215.625,
    "s": 39.344,
    "l": 52.157
  },
  "oklch": {
    "l": 0.58231,
    "c": 0.09864,
    "h": 257.8
  },
  "luminance": 0.19683
}

Semantic roles & 50–950 ramp

primary

#557CB5

secondary

#C8B79E

accent

#9F59CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #557CB5

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

Preview Lab → · Contrast checker → · Palette generator →