#557BC1#557BC1

#557BC1 is a mid, moderate blue. Relative luminance 0.199; OKLCH L 58.7% C 0.116 H 261.8°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#557BC1
RGB	rgb(85, 123, 193)
HSL	hsl(219, 47%, 55%)
HSV	hsv(219, 56%, 76%)
CMYK	cmyk(56%, 36.3%, 0%, 24.3%)
CIE-LAB	lab(51.78, 7.48, -40.68)
CIE-LCH	lch(51.78, 41.36, 280.42°)
OKLab	oklab(58.66% -0.0165 -0.1151)
OKLCH	oklch(58.66% 0.116 261.8)
XYZ	xyz(20.4516, 19.9459, 53.2139)
Luminance	0.1995 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BC1 #C19B55

analogous

#55B1C1 #557BC1 #6555C1

triadic

#557BC1 #C1557B #7BC155

tetradic

#557BC1 #C155B1 #C19B55 #55C165

square

#557BC1 #C155B1 #C19B55 #55C165

split-complementary

#557BC1 #C16555 #B1C155

monochromatic

#2A4372 #3A5D9F #557BC1 #829ED1 #AFC1E2

Accessibility & contrast

On white

4.21

#557BC1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#557BC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BC1

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BC1	#FFFFFF	#000000	##000000
##557BC1	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E81C4

Deuteranopia (green-blind)

#5177C0

Tritanopia (blue-blind)

#0C8A95

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #557bc1;
/* rgb */ color: rgb(85, 123, 193);
/* oklch */ color: oklch(58.7% 0.116 261.8);

Tailwind

colors: {
  custom: {
    50: '#8ca0d4',
    500: '#557bc1',
    950: '#000000',
  },
}

SCSS

$custom: #557bc1;
$custom-light: #8ca0d4;
$custom-dark: #000000;

JSON

{
  "hex": "#557bc1",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 193
  },
  "hsl": {
    "h": 218.889,
    "s": 46.552,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58657,
    "c": 0.11626,
    "h": 261.8
  },
  "luminance": 0.19947
}

Semantic roles & 50–950 ramp

primary

#557BC1

secondary

#D0C0A2

accent

#A852D6

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #557BC1

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

Preview Lab → · Contrast checker → · Palette generator →