#557CB3#557CB3

#557CB3 is a mid, moderate blue. Relative luminance 0.196; OKLCH L 58.1% C 0.096 H 257.1°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#557CB3
RGB	rgb(85, 124, 179)
HSL	hsl(215, 38%, 52%)
HSV	hsv(215, 53%, 70%)
CMYK	cmyk(52.5%, 30.7%, 0%, 29.8%)
CIE-LAB	lab(51.38, 2.37, -33.26)
CIE-LCH	lch(51.38, 33.34, 274.07°)
OKLab	oklab(58.13% -0.0215 -0.0935)
OKLCH	oklch(58.13% 0.096 257.1)
XYZ	xyz(19.0879, 19.5998, 45.4164)
Luminance	0.1960 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CB3 #B38C55

analogous

#55ABB3 #557CB3 #5D55B3

triadic

#557CB3 #B3557C #7CB355

tetradic

#557CB3 #B355AB #B38C55 #55B35D

square

#557CB3 #B355AB #B38C55 #55B35D

split-complementary

#557CB3 #B35D55 #ABB355

monochromatic

#2C4262 #3F5F8C #557CB3 #7F9DC6 #AABDD9

Accessibility & contrast

On white

4.27

#557CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#557CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CB3

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CB3	#FFFFFF	#000000	##000000
##557CB3	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667FB5

Deuteranopia (green-blind)

#5B76B2

Tritanopia (blue-blind)

#24888F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #557cb3;
/* rgb */ color: rgb(85, 124, 179);
/* oklch */ color: oklch(58.1% 0.096 257.1);

Tailwind

colors: {
  custom: {
    50: '#8ba1ca',
    500: '#557cb3',
    950: '#000000',
  },
}

SCSS

$custom: #557cb3;
$custom-light: #8ba1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#557cb3",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 179
  },
  "hsl": {
    "h": 215.106,
    "s": 38.211,
    "l": 51.765
  },
  "oklch": {
    "l": 0.58127,
    "c": 0.09591,
    "h": 257.1
  },
  "luminance": 0.19601
}

Semantic roles & 50–950 ramp

primary

#557CB3

secondary

#C7B59D

accent

#9E5ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0F13

muted

#7D7E82

Preview Lab

Preview with #557CB3

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

Preview Lab → · Contrast checker → · Palette generator →