#557DB7#557DB7

#557DB7 is a mid, moderate blue. Relative luminance 0.200; OKLCH L 58.6% C 0.100 H 257.6°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#557DB7
RGB	rgb(85, 125, 183)
HSL	hsl(216, 40%, 53%)
HSV	hsv(216, 54%, 72%)
CMYK	cmyk(53.6%, 31.7%, 0%, 28.2%)
CIE-LAB	lab(51.86, 3.04, -34.82)
CIE-LCH	lch(51.86, 34.95, 274.99°)
OKLab	oklab(58.56% -0.0215 -0.098)
OKLCH	oklch(58.56% 0.1 257.6)
XYZ	xyz(19.6242, 20.0159, 47.6199)
Luminance	0.2002 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DB7 #B78F55

analogous

#55AEB7 #557DB7 #5E55B7

triadic

#557DB7 #B7557D #7DB755

tetradic

#557DB7 #B755AE #B78F55 #55B75E

square

#557DB7 #B755AE #B78F55 #55B75E

split-complementary

#557DB7 #B75E55 #AEB755

monochromatic

#2B4366 #3E6091 #557DB7 #809EC9 #ABBFDB

Accessibility & contrast

On white

4.20

#557DB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#557DB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DB7

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DB7	#FFFFFF	#000000	##000000
##557DB7	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6681B9

Deuteranopia (green-blind)

#5A77B6

Tritanopia (blue-blind)

#1F8A92

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557db7;
/* rgb */ color: rgb(85, 125, 183);
/* oklch */ color: oklch(58.6% 0.100 257.6);

Tailwind

colors: {
  custom: {
    50: '#8ba2cd',
    500: '#557db7',
    950: '#000000',
  },
}

SCSS

$custom: #557db7;
$custom-light: #8ba2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#557db7",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 183
  },
  "hsl": {
    "h": 215.51,
    "s": 40.496,
    "l": 52.549
  },
  "oklch": {
    "l": 0.58558,
    "c": 0.10033,
    "h": 257.6
  },
  "luminance": 0.20017
}

Semantic roles & 50–950 ramp

primary

#557DB7

secondary

#C9B89F

accent

#9F57D0

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0F13

muted

#7D7E82

Preview Lab

Preview with #557DB7

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

Preview Lab → · Contrast checker → · Palette generator →