#557BD5#557BD5

#557BD5 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.8% C 0.144 H 265.1°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#557BD5
RGB	rgb(85, 123, 213)
HSL	hsl(222, 60%, 58%)
HSV	hsv(222, 60%, 84%)
CMYK	cmyk(60.1%, 42.3%, 0%, 16.5%)
CIE-LAB	lab(52.84, 14.11, -50.38)
CIE-LCH	lch(52.84, 52.31, 285.65°)
OKLab	oklab(59.83% -0.0123 -0.1434)
OKLCH	oklch(59.83% 0.144 265.1)
XYZ	xyz(22.8354, 20.8994, 65.7685)
Luminance	0.2090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BD5 #D5AF55

analogous

#55BBD5 #557BD5 #6F55D5

triadic

#557BD5 #D5557B #7BD555

tetradic

#557BD5 #D555BB #D5AF55 #55D56F

square

#557BD5 #D555BB #D5AF55 #55D56F

split-complementary

#557BD5 #D56F55 #BBD555

monochromatic

#23428D #2F59BE #557BD5 #86A1E1 #B7C7ED

Accessibility & contrast

On white

4.05

#557BD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#557BD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BD5

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BD5	#FFFFFF	#000000	##000000
##557BD5	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5384D8

Deuteranopia (green-blind)

#4179D3

Tritanopia (blue-blind)

#008F9E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557bd5;
/* rgb */ color: rgb(85, 123, 213);
/* oklch */ color: oklch(59.8% 0.144 265.1);

Tailwind

colors: {
  custom: {
    50: '#8fa0e2',
    500: '#557bd5',
    950: '#000000',
  },
}

SCSS

$custom: #557bd5;
$custom-light: #8fa0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#557bd5",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 213
  },
  "hsl": {
    "h": 222.188,
    "s": 60.377,
    "l": 58.431
  },
  "oklch": {
    "l": 0.59825,
    "c": 0.14396,
    "h": 265.1
  },
  "luminance": 0.20901
}

Semantic roles & 50–950 ramp

primary

#557BD5

secondary

#DCCDA9

accent

#B444E4

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557BD5

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

Preview Lab → · Contrast checker → · Palette generator →