#557BDF#557BDF

#557BDF is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.4% C 0.158 H 266.2°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#557BDF
RGB	rgb(85, 123, 223)
HSL	hsl(223, 68%, 60%)
HSV	hsv(223, 62%, 87%)
CMYK	cmyk(61.9%, 44.8%, 0%, 12.5%)
CIE-LAB	lab(53.41, 17.48, -55.10)
CIE-LCH	lch(53.41, 57.81, 287.60°)
OKLab	oklab(60.45% -0.0106 -0.1573)
OKLCH	oklch(60.45% 0.158 266.2)
XYZ	xyz(24.1440, 21.4228, 72.6604)
Luminance	0.2142 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BDF #DFB955

analogous

#55C0DF #557BDF #7455DF

triadic

#557BDF #DF557B #7BDF55

tetradic

#557BDF #DF55C0 #DFB955 #55DF74

square

#557BDF #DF55C0 #DFB955 #55DF74

split-complementary

#557BDF #DF7455 #C0DF55

monochromatic

#1D409C #2756D0 #557BDF #89A3E9 #BCCBF2

Accessibility & contrast

On white

3.97

#557BDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#557BDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BDF

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BDF	#FFFFFF	#000000	##000000
##557BDF	1.00	3.97	5.28	5.28
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B86E3

Deuteranopia (green-blind)

#357ADD

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557bdf;
/* rgb */ color: rgb(85, 123, 223);
/* oklch */ color: oklch(60.4% 0.158 266.2);

Tailwind

colors: {
  custom: {
    50: '#91a0e9',
    500: '#557bdf',
    950: '#000000',
  },
}

SCSS

$custom: #557bdf;
$custom-light: #91a0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#557bdf",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 223
  },
  "hsl": {
    "h": 223.478,
    "s": 68.317,
    "l": 60.392
  },
  "oklch": {
    "l": 0.60447,
    "c": 0.15768,
    "h": 266.2
  },
  "luminance": 0.21425
}

Semantic roles & 50–950 ramp

primary

#557BDF

secondary

#E2D4AE

accent

#9D15D0

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BDF

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

Preview Lab → · Contrast checker → · Palette generator →