#557BE9#557BE9

#557BE9 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.1% C 0.171 H 266.9°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#557BE9
RGB	rgb(85, 123, 233)
HSL	hsl(225, 77%, 62%)
HSV	hsv(225, 64%, 91%)
CMYK	cmyk(63.5%, 47.2%, 0%, 8.6%)
CIE-LAB	lab(54.00, 20.88, -59.75)
CIE-LCH	lch(54.00, 63.30, 289.26°)
OKLab	oklab(61.09% -0.0091 -0.171)
OKLCH	oklch(61.09% 0.171 266.9)
XYZ	xyz(25.5322, 21.9781, 79.9717)
Luminance	0.2198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BE9 #E9C355

analogous

#55C5E9 #557BE9 #7955E9

triadic

#557BE9 #E9557B #7BE955

tetradic

#557BE9 #E955C5 #E9C355 #55E979

square

#557BE9 #E955C5 #E9C355 #55E979

split-complementary

#557BE9 #E97955 #C5E955

monochromatic

#163DAD #1F51E2 #557BE9 #8BA5F0 #C1CFF7

Accessibility & contrast

On white

3.89

#557BE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#557BE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BE9

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BE9	#FFFFFF	#000000	##000000
##557BE9	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4388ED

Deuteranopia (green-blind)

#257BE7

Tritanopia (blue-blind)

#0094A7

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557be9;
/* rgb */ color: rgb(85, 123, 233);
/* oklch */ color: oklch(61.1% 0.171 266.9);

Tailwind

colors: {
  custom: {
    50: '#93a0f1',
    500: '#557be9',
    950: '#000000',
  },
}

SCSS

$custom: #557be9;
$custom-light: #93a0f1;
$custom-dark: #000000;

JSON

{
  "hex": "#557be9",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 233
  },
  "hsl": {
    "h": 224.595,
    "s": 77.083,
    "l": 62.353
  },
  "oklch": {
    "l": 0.61093,
    "c": 0.17124,
    "h": 266.9
  },
  "luminance": 0.2198
}

Semantic roles & 50–950 ramp

primary

#557BE9

secondary

#E8DAB2

accent

#A50CD9

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557BE9

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

Preview Lab → · Contrast checker → · Palette generator →