#557BD4#557BD4

#557BD4 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.8% C 0.143 H 265.0°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#557BD4
RGB	rgb(85, 123, 212)
HSL	hsl(222, 60%, 58%)
HSV	hsv(222, 60%, 83%)
CMYK	cmyk(59.9%, 42%, 0%, 16.9%)
CIE-LAB	lab(52.78, 13.78, -49.90)
CIE-LCH	lch(52.78, 51.77, 285.44°)
OKLab	oklab(59.76% -0.0125 -0.142)
OKLCH	oklch(59.76% 0.143 265)
XYZ	xyz(22.7089, 20.8487, 65.1021)
Luminance	0.2085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BD4 #D4AE55

analogous

#55BAD4 #557BD4 #6E55D4

triadic

#557BD4 #D4557B #7BD455

tetradic

#557BD4 #D455BA #D4AE55 #55D46E

square

#557BD4 #D455BA #D4AE55 #55D46E

split-complementary

#557BD4 #D46E55 #BAD455

monochromatic

#23428B #305ABC #557BD4 #86A1E0 #B7C7ED

Accessibility & contrast

On white

4.06

#557BD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#557BD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BD4

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BD4	#FFFFFF	#000000	##000000
##557BD4	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5384D7

Deuteranopia (green-blind)

#4279D2

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557bd4;
/* rgb */ color: rgb(85, 123, 212);
/* oklch */ color: oklch(59.8% 0.143 265.0);

Tailwind

colors: {
  custom: {
    50: '#8fa0e2',
    500: '#557bd4',
    950: '#000000',
  },
}

SCSS

$custom: #557bd4;
$custom-light: #8fa0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#557bd4",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 212
  },
  "hsl": {
    "h": 222.047,
    "s": 59.624,
    "l": 58.235
  },
  "oklch": {
    "l": 0.59764,
    "c": 0.14259,
    "h": 265
  },
  "luminance": 0.20851
}

Semantic roles & 50–950 ramp

primary

#557BD4

secondary

#DCCDA9

accent

#B445E3

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557BD4

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

Preview Lab → · Contrast checker → · Palette generator →