#557BBC#557BBC

#557BBC is a mid, moderate blue. Relative luminance 0.197; OKLCH L 58.4% C 0.109 H 260.6°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#557BBC
RGB	rgb(85, 123, 188)
HSL	hsl(218, 43%, 54%)
HSV	hsv(218, 55%, 74%)
CMYK	cmyk(54.8%, 34.6%, 0%, 26.3%)
CIE-LAB	lab(51.53, 5.85, -38.21)
CIE-LCH	lch(51.53, 38.66, 278.71°)
OKLab	oklab(58.38% -0.0178 -0.1079)
OKLCH	oklch(58.38% 0.109 260.6)
XYZ	xyz(19.9033, 19.7265, 50.3260)
Luminance	0.1973 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BBC #BC9655

analogous

#55AEBC #557BBC #6255BC

triadic

#557BBC #BC557B #7BBC55

tetradic

#557BBC #BC55AE #BC9655 #55BC62

square

#557BBC #BC55AE #BC9655 #55BC62

split-complementary

#557BBC #BC6255 #AEBC55

monochromatic

#2B436C #3C5E98 #557BBC #819DCD #ADBFDF

Accessibility & contrast

On white

4.25

#557BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#557BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BBC

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BBC	#FFFFFF	#000000	##000000
##557BBC	1.00	4.25	4.95	4.95
#FFFFFF	4.25	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)

#6180BF

Deuteranopia (green-blind)

#5476BB

Tritanopia (blue-blind)

#188993

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #557bbc;
/* rgb */ color: rgb(85, 123, 188);
/* oklch */ color: oklch(58.4% 0.109 260.6);

Tailwind

colors: {
  custom: {
    50: '#8ca0d0',
    500: '#557bbc',
    950: '#000000',
  },
}

SCSS

$custom: #557bbc;
$custom-light: #8ca0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#557bbc",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 188
  },
  "hsl": {
    "h": 217.864,
    "s": 43.46,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58381,
    "c": 0.10933,
    "h": 260.6
  },
  "luminance": 0.19728
}

Semantic roles & 50–950 ramp

primary

#557BBC

secondary

#CCBCA0

accent

#A455D3

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0E14

muted

#7D7E82

Preview Lab

Preview with #557BBC

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

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