#557ABB#557ABB

#557ABB is a mid, moderate blue. Relative luminance 0.194; OKLCH L 58.1% C 0.109 H 261.1°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#557ABB
RGB	rgb(85, 122, 187)
HSL	hsl(218, 43%, 53%)
HSV	hsv(218, 55%, 73%)
CMYK	cmyk(54.5%, 34.8%, 0%, 26.7%)
CIE-LAB	lab(51.19, 6.13, -38.16)
CIE-LCH	lch(51.19, 38.65, 279.13°)
OKLab	oklab(58.11% -0.0169 -0.1077)
OKLCH	oklch(58.11% 0.109 261.1)
XYZ	xyz(19.6724, 19.4367, 49.7191)
Luminance	0.1944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557ABB #BB9655

analogous

#55ADBB #557ABB #6355BB

triadic

#557ABB #BB557A #7ABB55

tetradic

#557ABB #BB55AD #BB9655 #55BB63

square

#557ABB #BB55AD #BB9655 #55BB63

split-complementary

#557ABB #BB6355 #ADBB55

monochromatic

#2B426B #3C5D97 #557ABB #819CCC #ACBEDE

Accessibility & contrast

On white

4.30

#557ABB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#557ABB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557ABB

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557ABB	#FFFFFF	#000000	##000000
##557ABB	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607FBE

Deuteranopia (green-blind)

#5476BA

Tritanopia (blue-blind)

#1A8892

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #557abb;
/* rgb */ color: rgb(85, 122, 187);
/* oklch */ color: oklch(58.1% 0.109 261.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#557abb",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 187
  },
  "hsl": {
    "h": 218.235,
    "s": 42.857,
    "l": 53.333
  },
  "oklch": {
    "l": 0.58106,
    "c": 0.10905,
    "h": 261.1
  },
  "luminance": 0.19438
}

Semantic roles & 50–950 ramp

primary

#557ABB

secondary

#CCBCA0

accent

#A555D3

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0E14

muted

#7D7E82

Preview Lab

Preview with #557ABB

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

Preview Lab → · Contrast checker → · Palette generator →