#557BF3#557BF3

#557BF3 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.8% C 0.185 H 267.5°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#557BF3
RGB	rgb(85, 123, 243)
HSL	hsl(226, 87%, 64%)
HSV	hsv(226, 65%, 95%)
CMYK	cmyk(65%, 49.4%, 0%, 4.7%)
CIE-LAB	lab(54.62, 24.28, -64.33)
CIE-LCH	lch(54.62, 68.76, 290.68°)
OKLab	oklab(61.76% -0.0079 -0.1845)
OKLCH	oklch(61.76% 0.185 267.5)
XYZ	xyz(27.0014, 22.5658, 87.7093)
Luminance	0.2257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BF3 #F3CD55

analogous

#55CAF3 #557BF3 #7E55F3

triadic

#557BF3 #F3557B #7BF355

tetradic

#557BF3 #F355CA #F3CD55 #55F37E

square

#557BF3 #F355CA #F3CD55 #55F37E

split-complementary

#557BF3 #F37E55 #CAF355

monochromatic

#0E38C0 #1C4FEF #557BF3 #8EA7F7 #C7D4FB

Accessibility & contrast

On white

3.81

#557BF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#557BF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BF3

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BF3	#FFFFFF	#000000	##000000
##557BF3	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#378AF7

Deuteranopia (green-blind)

#007CF1

Tritanopia (blue-blind)

#0097AB

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #557bf3;
/* rgb */ color: rgb(85, 123, 243);
/* oklch */ color: oklch(61.8% 0.185 267.5);

Tailwind

colors: {
  custom: {
    50: '#94a0f8',
    500: '#557bf3',
    950: '#000000',
  },
}

SCSS

$custom: #557bf3;
$custom-light: #94a0f8;
$custom-dark: #000000;

JSON

{
  "hex": "#557bf3",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 243
  },
  "hsl": {
    "h": 225.57,
    "s": 86.813,
    "l": 64.314
  },
  "oklch": {
    "l": 0.61762,
    "c": 0.18463,
    "h": 267.5
  },
  "luminance": 0.22568
}

Semantic roles & 50–950 ramp

primary

#557BF3

secondary

#EDE0B6

accent

#AD02E3

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557BF3

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

Preview Lab → · Contrast checker → · Palette generator →