#557EE3#557EE3

#557EE3 is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.3% C 0.160 H 265.4°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#557EE3
RGB	rgb(85, 126, 227)
HSL	hsl(223, 72%, 61%)
HSV	hsv(223, 63%, 89%)
CMYK	cmyk(62.6%, 44.5%, 0%, 11%)
CIE-LAB	lab(54.45, 17.00, -55.69)
CIE-LCH	lch(54.45, 58.23, 286.98°)
OKLab	oklab(61.32% -0.0129 -0.159)
OKLCH	oklch(61.32% 0.16 265.4)
XYZ	xyz(25.0675, 22.3968, 75.6601)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557EE3 #E3BA55

analogous

#55C5E3 #557EE3 #7355E3

triadic

#557EE3 #E3557E #7EE355

tetradic

#557EE3 #E355C5 #E3BA55 #55E373

square

#557EE3 #E355C5 #E3BA55 #55E373

split-complementary

#557EE3 #E37355 #C5E355

monochromatic

#1B42A3 #2357D7 #557EE3 #8AA6EC #BECEF4

Accessibility & contrast

On white

3.83

#557EE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#557EE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557EE3

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557EE3	#FFFFFF	#000000	##000000
##557EE3	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E89E7

Deuteranopia (green-blind)

#377CE1

Tritanopia (blue-blind)

#0095A5

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557ee3;
/* rgb */ color: rgb(85, 126, 227);
/* oklch */ color: oklch(61.3% 0.160 265.4);

Tailwind

colors: {
  custom: {
    50: '#91a2ec',
    500: '#557ee3',
    950: '#000000',
  },
}

SCSS

$custom: #557ee3;
$custom-light: #91a2ec;
$custom-dark: #000000;

JSON

{
  "hex": "#557ee3",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 227
  },
  "hsl": {
    "h": 222.676,
    "s": 71.717,
    "l": 61.176
  },
  "oklch": {
    "l": 0.61317,
    "c": 0.15953,
    "h": 265.4
  },
  "luminance": 0.22399
}

Semantic roles & 50–950 ramp

primary

#557EE3

secondary

#E5D5AF

accent

#9C12D4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #557EE3

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

Preview Lab → · Contrast checker → · Palette generator →