#557CB7#557CB7

#557CB7 is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.3% C 0.101 H 258.4°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#557CB7
RGB	rgb(85, 124, 183)
HSL	hsl(216, 40%, 53%)
HSV	hsv(216, 54%, 72%)
CMYK	cmyk(53.6%, 32.2%, 0%, 28.2%)
CIE-LAB	lab(51.57, 3.64, -35.27)
CIE-LCH	lch(51.57, 35.46, 275.89°)
OKLab	oklab(58.34% -0.0203 -0.0993)
OKLCH	oklch(58.34% 0.101 258.4)
XYZ	xyz(19.4983, 19.7640, 47.5779)
Luminance	0.1976 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CB7 #B79055

analogous

#55ADB7 #557CB7 #5F55B7

triadic

#557CB7 #B7557C #7CB755

tetradic

#557CB7 #B755AD #B79055 #55B75F

square

#557CB7 #B755AD #B79055 #55B75F

split-complementary

#557CB7 #B75F55 #ADB755

monochromatic

#2B4366 #3E5F91 #557CB7 #809DC9 #ABBEDB

Accessibility & contrast

On white

4.24

#557CB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#557CB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CB7

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CB7	#FFFFFF	#000000	##000000
##557CB7	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6580BA

Deuteranopia (green-blind)

#5977B6

Tritanopia (blue-blind)

#1F8991

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #557cb7;
/* rgb */ color: rgb(85, 124, 183);
/* oklch */ color: oklch(58.3% 0.101 258.4);

Tailwind

colors: {
  custom: {
    50: '#8ba1cd',
    500: '#557cb7',
    950: '#000000',
  },
}

SCSS

$custom: #557cb7;
$custom-light: #8ba1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#557cb7",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 183
  },
  "hsl": {
    "h": 216.122,
    "s": 40.496,
    "l": 52.549
  },
  "oklch": {
    "l": 0.58335,
    "c": 0.10137,
    "h": 258.4
  },
  "luminance": 0.19765
}

Semantic roles & 50–950 ramp

primary

#557CB7

secondary

#C9B89F

accent

#A057D0

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #557CB7

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

Preview Lab → · Contrast checker → · Palette generator →