#557BB8#557BB8

#557BB8 is a mid, moderate blue. Relative luminance 0.196; OKLCH L 58.2% C 0.104 H 259.5°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#557BB8
RGB	rgb(85, 123, 184)
HSL	hsl(217, 41%, 53%)
HSV	hsv(217, 54%, 72%)
CMYK	cmyk(53.8%, 33.2%, 0%, 27.8%)
CIE-LAB	lab(51.33, 4.56, -36.22)
CIE-LCH	lch(51.33, 36.50, 277.18°)
OKLab	oklab(58.17% -0.0189 -0.1021)
OKLCH	oklch(58.17% 0.104 259.5)
XYZ	xyz(19.4780, 19.5564, 48.0865)
Luminance	0.1956 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BB8 #B89255

analogous

#55ACB8 #557BB8 #6155B8

triadic

#557BB8 #B8557B #7BB855

tetradic

#557BB8 #B855AC #B89255 #55B861

square

#557BB8 #B855AC #B89255 #55B861

split-complementary

#557BB8 #B86155 #ACB855

monochromatic

#2B4267 #3D5E93 #557BB8 #809DCA #ABBEDC

Accessibility & contrast

On white

4.28

#557BB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#557BB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BB8

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BB8	#FFFFFF	#000000	##000000
##557BB8	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FBB

Deuteranopia (green-blind)

#5776B7

Tritanopia (blue-blind)

#1E8891

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #557bb8;
/* rgb */ color: rgb(85, 123, 184);
/* oklch */ color: oklch(58.2% 0.104 259.5);

Tailwind

colors: {
  custom: {
    50: '#8ba0cd',
    500: '#557bb8',
    950: '#000000',
  },
}

SCSS

$custom: #557bb8;
$custom-light: #8ba0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#557bb8",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 184
  },
  "hsl": {
    "h": 216.97,
    "s": 41.079,
    "l": 52.745
  },
  "oklch": {
    "l": 0.58166,
    "c": 0.1038,
    "h": 259.5
  },
  "luminance": 0.19558
}

Semantic roles & 50–950 ramp

primary

#557BB8

secondary

#CAB99F

accent

#A257D1

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #557BB8

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

Preview Lab → · Contrast checker → · Palette generator →