#557DBD#557DBD

#557DBD is a mid, moderate blue. Relative luminance 0.203; OKLCH L 58.9% C 0.109 H 259.5°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#557DBD
RGB	rgb(85, 125, 189)
HSL	hsl(217, 44%, 54%)
HSV	hsv(217, 55%, 74%)
CMYK	cmyk(55%, 33.9%, 0%, 25.9%)
CIE-LAB	lab(52.14, 4.97, -37.81)
CIE-LCH	lch(52.14, 38.14, 277.49°)
OKLab	oklab(58.88% -0.0199 -0.1067)
OKLCH	oklch(58.88% 0.109 259.5)
XYZ	xyz(20.2621, 20.2711, 50.9792)
Luminance	0.2027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DBD #BD9555

analogous

#55B1BD #557DBD #6155BD

triadic

#557DBD #BD557D #7DBD55

tetradic

#557DBD #BD55B1 #BD9555 #55BD61

square

#557DBD #BD55B1 #BD9555 #55BD61

split-complementary

#557DBD #BD6155 #B1BD55

monochromatic

#2A446D #3C6099 #557DBD #819FCE #ADC0DF

Accessibility & contrast

On white

4.15

#557DBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#557DBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DBD

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DBD	#FFFFFF	#000000	##000000
##557DBD	1.00	4.15	5.05	5.05
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6382C0

Deuteranopia (green-blind)

#5678BC

Tritanopia (blue-blind)

#158B94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557dbd;
/* rgb */ color: rgb(85, 125, 189);
/* oklch */ color: oklch(58.9% 0.109 259.5);

Tailwind

colors: {
  custom: {
    50: '#8ca2d1',
    500: '#557dbd',
    950: '#000000',
  },
}

SCSS

$custom: #557dbd;
$custom-light: #8ca2d1;
$custom-dark: #000000;

JSON

{
  "hex": "#557dbd",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 189
  },
  "hsl": {
    "h": 216.923,
    "s": 44.068,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58877,
    "c": 0.10853,
    "h": 259.5
  },
  "luminance": 0.20273
}

Semantic roles & 50–950 ramp

primary

#557DBD

secondary

#CDBCA1

accent

#A354D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0F14

muted

#7D7E82

Preview Lab

Preview with #557DBD

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

Preview Lab → · Contrast checker → · Palette generator →