#557DBC#557DBC

#557DBC is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.8% C 0.107 H 259.2°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#557DBC
RGB	rgb(85, 125, 188)
HSL	hsl(217, 43%, 54%)
HSV	hsv(217, 55%, 74%)
CMYK	cmyk(54.8%, 33.5%, 0%, 26.3%)
CIE-LAB	lab(52.09, 4.65, -37.32)
CIE-LCH	lch(52.09, 37.61, 277.10°)
OKLab	oklab(58.82% -0.0201 -0.1053)
OKLCH	oklch(58.82% 0.107 259.2)
XYZ	xyz(20.1539, 20.2278, 50.4095)
Luminance	0.2023 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DBC #BC9455

analogous

#55B0BC #557DBC #6055BC

triadic

#557DBC #BC557D #7DBC55

tetradic

#557DBC #BC55B0 #BC9455 #55BC60

square

#557DBC #BC55B0 #BC9455 #55BC60

split-complementary

#557DBC #BC6055 #B0BC55

monochromatic

#2B446C #3C6098 #557DBC #819FCD #ADC0DF

Accessibility & contrast

On white

4.16

#557DBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#557DBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DBC

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DBC	#FFFFFF	#000000	##000000
##557DBC	1.00	4.16	5.05	5.05
#FFFFFF	4.16	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)

#6482BF

Deuteranopia (green-blind)

#5778BB

Tritanopia (blue-blind)

#178B94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557dbc;
/* rgb */ color: rgb(85, 125, 188);
/* oklch */ color: oklch(58.8% 0.107 259.2);

Tailwind

colors: {
  custom: {
    50: '#8ca2d0',
    500: '#557dbc',
    950: '#000000',
  },
}

SCSS

$custom: #557dbc;
$custom-light: #8ca2d0;
$custom-dark: #000000;

JSON

{
  "hex": "#557dbc",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 188
  },
  "hsl": {
    "h": 216.699,
    "s": 43.46,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58823,
    "c": 0.10717,
    "h": 259.2
  },
  "luminance": 0.20229
}

Semantic roles & 50–950 ramp

primary

#557DBC

secondary

#CCBBA0

accent

#A255D3

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0F14

muted

#7D7E82

Preview Lab

Preview with #557DBC

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

Preview Lab → · Contrast checker → · Palette generator →