#557AB2#557AB2

#557AB2 is a mid, moderate blue. Relative luminance 0.191; OKLCH L 57.6% C 0.097 H 258.4°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#557AB2
RGB	rgb(85, 122, 178)
HSL	hsl(216, 38%, 52%)
HSV	hsv(216, 52%, 70%)
CMYK	cmyk(52.2%, 31.5%, 0%, 30.2%)
CIE-LAB	lab(50.76, 3.25, -33.65)
CIE-LCH	lch(50.76, 33.81, 275.51°)
OKLab	oklab(57.63% -0.0193 -0.0946)
OKLCH	oklch(57.63% 0.097 258.4)
XYZ	xyz(18.7390, 19.0633, 44.8030)
Luminance	0.1906 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557AB2 #B28D55

analogous

#55A9B2 #557AB2 #5F55B2

triadic

#557AB2 #B2557A #7AB255

tetradic

#557AB2 #B255A9 #B28D55 #55B25F

square

#557AB2 #B255A9 #B28D55 #55B25F

split-complementary

#557AB2 #B25F55 #A9B255

monochromatic

#2C4161 #3F5D8B #557AB2 #7F9BC5 #A9BCD8

Accessibility & contrast

On white

4.36

#557AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#557AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557AB2

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557AB2	#FFFFFF	#000000	##000000
##557AB2	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647EB4

Deuteranopia (green-blind)

#5975B1

Tritanopia (blue-blind)

#26868E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #557ab2;
/* rgb */ color: rgb(85, 122, 178);
/* oklch */ color: oklch(57.6% 0.097 258.4);

Tailwind

colors: {
  custom: {
    50: '#8ba0c9',
    500: '#557ab2',
    950: '#000000',
  },
}

SCSS

$custom: #557ab2;
$custom-light: #8ba0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#557ab2",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 178
  },
  "hsl": {
    "h": 216.129,
    "s": 37.652,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57627,
    "c": 0.09659,
    "h": 258.4
  },
  "luminance": 0.19065
}

Semantic roles & 50–950 ramp

primary

#557AB2

secondary

#C6B69D

accent

#A05ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #557AB2

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

Preview Lab → · Contrast checker → · Palette generator →