#557BB6#557BB6

#557BB6 is a mid, moderate blue. Relative luminance 0.195; OKLCH L 58.1% C 0.101 H 258.9°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#557BB6
RGB	rgb(85, 123, 182)
HSL	hsl(216, 40%, 52%)
HSV	hsv(216, 53%, 71%)
CMYK	cmyk(53.3%, 32.4%, 0%, 28.6%)
CIE-LAB	lab(51.24, 3.92, -35.22)
CIE-LCH	lch(51.24, 35.43, 276.35°)
OKLab	oklab(58.06% -0.0194 -0.0992)
OKLCH	oklch(58.06% 0.101 258.9)
XYZ	xyz(19.2699, 19.4732, 46.9901)
Luminance	0.1948 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BB6 #B69055

analogous

#55ACB6 #557BB6 #6055B6

triadic

#557BB6 #B6557B #7BB655

tetradic

#557BB6 #B655AC #B69055 #55B660

square

#557BB6 #B655AC #B69055 #55B660

split-complementary

#557BB6 #B66055 #ACB655

monochromatic

#2B4265 #3E5E90 #557BB6 #809CC8 #ABBDDB

Accessibility & contrast

On white

4.29

#557BB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#557BB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BB6

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BB6	#FFFFFF	#000000	##000000
##557BB6	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647FB8

Deuteranopia (green-blind)

#5876B5

Tritanopia (blue-blind)

#218890

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #557bb6;
/* rgb */ color: rgb(85, 123, 182);
/* oklch */ color: oklch(58.1% 0.101 258.9);

Tailwind

colors: {
  custom: {
    50: '#8ba0cc',
    500: '#557bb6',
    950: '#000000',
  },
}

SCSS

$custom: #557bb6;
$custom-light: #8ba0cc;
$custom-dark: #000000;

JSON

{
  "hex": "#557bb6",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 182
  },
  "hsl": {
    "h": 216.495,
    "s": 39.918,
    "l": 52.353
  },
  "oklch": {
    "l": 0.5806,
    "c": 0.10104,
    "h": 258.9
  },
  "luminance": 0.19475
}

Semantic roles & 50–950 ramp

primary

#557BB6

secondary

#C9B89E

accent

#A158D0

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #557BB6

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

Preview Lab → · Contrast checker → · Palette generator →