#557BBD#557BBD

#557BBD is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.4% C 0.111 H 260.9°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#557BBD
RGB	rgb(85, 123, 189)
HSL	hsl(218, 44%, 54%)
HSV	hsv(218, 55%, 74%)
CMYK	cmyk(55%, 34.9%, 0%, 25.9%)
CIE-LAB	lab(51.58, 6.18, -38.71)
CIE-LCH	lch(51.58, 39.20, 279.07°)
OKLab	oklab(58.44% -0.0175 -0.1093)
OKLCH	oklch(58.44% 0.111 260.9)
XYZ	xyz(20.0114, 19.7698, 50.8957)
Luminance	0.1977 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BBD #BD9755

analogous

#55AFBD #557BBD #6355BD

triadic

#557BBD #BD557B #7BBD55

tetradic

#557BBD #BD55AF #BD9755 #55BD63

square

#557BBD #BD55AF #BD9755 #55BD63

split-complementary

#557BBD #BD6355 #AFBD55

monochromatic

#2A436D #3C5E99 #557BBD #819DCE #ADBFDF

Accessibility & contrast

On white

4.24

#557BBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#557BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BBD

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BBD	#FFFFFF	#000000	##000000
##557BBD	1.00	4.24	4.95	4.95
#FFFFFF	4.24	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)

#6080C0

Deuteranopia (green-blind)

#5476BC

Tritanopia (blue-blind)

#168A93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #557bbd;
/* rgb */ color: rgb(85, 123, 189);
/* oklch */ color: oklch(58.4% 0.111 260.9);

Tailwind

colors: {
  custom: {
    50: '#8ca0d1',
    500: '#557bbd',
    950: '#000000',
  },
}

SCSS

$custom: #557bbd;
$custom-light: #8ca0d1;
$custom-dark: #000000;

JSON

{
  "hex": "#557bbd",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 189
  },
  "hsl": {
    "h": 218.077,
    "s": 44.068,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58436,
    "c": 0.11071,
    "h": 260.9
  },
  "luminance": 0.19771
}

Semantic roles & 50–950 ramp

primary

#557BBD

secondary

#CDBDA1

accent

#A554D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0E14

muted

#7D7E82

Preview Lab

Preview with #557BBD

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

Preview Lab → · Contrast checker → · Palette generator →