#557CE0#557CE0

#557CE0 is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.7% C 0.158 H 265.9°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#557CE0
RGB	rgb(85, 124, 224)
HSL	hsl(223, 69%, 61%)
HSV	hsv(223, 62%, 88%)
CMYK	cmyk(62.1%, 44.6%, 0%, 12.2%)
CIE-LAB	lab(53.74, 17.21, -55.14)
CIE-LCH	lch(53.74, 57.77, 287.33°)
OKLab	oklab(60.72% -0.0114 -0.1574)
OKLCH	oklch(60.72% 0.158 265.9)
XYZ	xyz(24.4039, 21.7263, 73.4141)
Luminance	0.2173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CE0 #E0B955

analogous

#55C2E0 #557CE0 #7355E0

triadic

#557CE0 #E0557C #7CE055

tetradic

#557CE0 #E055C2 #E0B955 #55E073

square

#557CE0 #E055C2 #E0B955 #55E073

split-complementary

#557CE0 #E07355 #C2E055

monochromatic

#1D419E #2656D2 #557CE0 #89A4E9 #BDCCF3

Accessibility & contrast

On white

3.93

#557CE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#557CE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CE0

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CE0	#FFFFFF	#000000	##000000
##557CE0	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D87E4

Deuteranopia (green-blind)

#367ADE

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557ce0;
/* rgb */ color: rgb(85, 124, 224);
/* oklch */ color: oklch(60.7% 0.158 265.9);

Tailwind

colors: {
  custom: {
    50: '#91a1ea',
    500: '#557ce0',
    950: '#000000',
  },
}

SCSS

$custom: #557ce0;
$custom-light: #91a1ea;
$custom-dark: #000000;

JSON

{
  "hex": "#557ce0",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 224
  },
  "hsl": {
    "h": 223.165,
    "s": 69.154,
    "l": 60.588
  },
  "oklch": {
    "l": 0.60716,
    "c": 0.15784,
    "h": 265.9
  },
  "luminance": 0.21728
}

Semantic roles & 50–950 ramp

primary

#557CE0

secondary

#E3D4AE

accent

#9C14D1

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557CE0

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

Preview Lab → · Contrast checker → · Palette generator →