#557BEA#557BEA

#557BEA is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.2% C 0.173 H 267.0°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#557BEA
RGB	rgb(85, 123, 234)
HSL	hsl(225, 78%, 63%)
HSV	hsv(225, 64%, 92%)
CMYK	cmyk(63.7%, 47.4%, 0%, 8.2%)
CIE-LAB	lab(54.06, 21.22, -60.21)
CIE-LCH	lch(54.06, 63.84, 289.41°)
OKLab	oklab(61.16% -0.009 -0.1723)
OKLCH	oklch(61.16% 0.173 267)
XYZ	xyz(25.6755, 22.0354, 80.7261)
Luminance	0.2204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BEA #EAC455

analogous

#55C5EA #557BEA #7A55EA

triadic

#557BEA #EA557B #7BEA55

tetradic

#557BEA #EA55C5 #EAC455 #55EA7A

square

#557BEA #EA55C5 #EAC455 #55EA7A

split-complementary

#557BEA #EA7A55 #C5EA55

monochromatic

#163DAF #1F51E3 #557BEA #8BA5F1 #C2D0F7

Accessibility & contrast

On white

3.88

#557BEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#557BEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BEA

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BEA	#FFFFFF	#000000	##000000
##557BEA	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4288EE

Deuteranopia (green-blind)

#227BE8

Tritanopia (blue-blind)

#0095A7

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557bea;
/* rgb */ color: rgb(85, 123, 234);
/* oklch */ color: oklch(61.2% 0.173 267.0);

Tailwind

colors: {
  custom: {
    50: '#93a0f1',
    500: '#557bea',
    950: '#000000',
  },
}

SCSS

$custom: #557bea;
$custom-light: #93a0f1;
$custom-dark: #000000;

JSON

{
  "hex": "#557bea",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 234
  },
  "hsl": {
    "h": 224.698,
    "s": 78.01,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61159,
    "c": 0.17258,
    "h": 267
  },
  "luminance": 0.22038
}

Semantic roles & 50–950 ramp

primary

#557BEA

secondary

#E8DBB2

accent

#A50BDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557BEA

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

Preview Lab → · Contrast checker → · Palette generator →