#557BF1#557BF1

#557BF1 is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.6% C 0.182 H 267.4°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#557BF1
RGB	rgb(85, 123, 241)
HSL	hsl(225, 85%, 64%)
HSV	hsv(225, 65%, 95%)
CMYK	cmyk(64.7%, 49%, 0%, 5.5%)
CIE-LAB	lab(54.50, 23.60, -63.42)
CIE-LCH	lch(54.50, 67.67, 290.41°)
OKLab	oklab(61.63% -0.0081 -0.1818)
OKLCH	oklch(61.63% 0.182 267.4)
XYZ	xyz(26.7010, 22.4456, 86.1273)
Luminance	0.2245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BF1 #F1CB55

analogous

#55C9F1 #557BF1 #7D55F1

triadic

#557BF1 #F1557B #7BF155

tetradic

#557BF1 #F155C9 #F1CB55 #55F17D

square

#557BF1 #F155C9 #F1CB55 #55F17D

split-complementary

#557BF1 #F17D55 #C9F155

monochromatic

#0F3ABC #1C4FEC #557BF1 #8EA7F6 #C6D3FA

Accessibility & contrast

On white

3.83

#557BF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#557BF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BF1

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BF1	#FFFFFF	#000000	##000000
##557BF1	1.00	3.83	5.49	5.49
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A8AF5

Deuteranopia (green-blind)

#0B7CEF

Tritanopia (blue-blind)

#0096AB

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557bf1;
/* rgb */ color: rgb(85, 123, 241);
/* oklch */ color: oklch(61.6% 0.182 267.4);

Tailwind

colors: {
  custom: {
    50: '#94a0f6',
    500: '#557bf1',
    950: '#000000',
  },
}

SCSS

$custom: #557bf1;
$custom-light: #94a0f6;
$custom-dark: #000000;

JSON

{
  "hex": "#557bf1",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 241
  },
  "hsl": {
    "h": 225.385,
    "s": 84.783,
    "l": 63.922
  },
  "oklch": {
    "l": 0.61627,
    "c": 0.18196,
    "h": 267.4
  },
  "luminance": 0.22448
}

Semantic roles & 50–950 ramp

primary

#557BF1

secondary

#ECDFB6

accent

#AB04E1

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557BF1

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

Preview Lab → · Contrast checker → · Palette generator →