#557FEA#557FEA

#557FEA is a mid, vivid blue. Relative luminance 0.231; OKLCH L 62.0% C 0.168 H 265.6°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#557FEA
RGB	rgb(85, 127, 234)
HSL	hsl(223, 78%, 63%)
HSV	hsv(223, 64%, 92%)
CMYK	cmyk(63.7%, 45.7%, 0%, 8.2%)
CIE-LAB	lab(55.12, 18.77, -58.52)
CIE-LCH	lch(55.12, 61.45, 287.78°)
OKLab	oklab(61.97% -0.0128 -0.1673)
OKLCH	oklch(61.97% 0.168 265.6)
XYZ	xyz(26.1818, 23.0481, 80.8949)
Luminance	0.2305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FEA #EAC055

analogous

#55CAEA #557FEA #7555EA

triadic

#557FEA #EA557F #7FEA55

tetradic

#557FEA #EA55CA #EAC055 #55EA75

square

#557FEA #EA55CA #EAC055 #55EA75

split-complementary

#557FEA #EA7555 #CAEA55

monochromatic

#1641AF #1F56E3 #557FEA #8BA8F1 #C2D1F7

Accessibility & contrast

On white

3.74

#557FEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#557FEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FEA

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FEA	#FFFFFF	#000000	##000000
##557FEA	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A8BEE

Deuteranopia (green-blind)

#2F7EE8

Tritanopia (blue-blind)

#0098A9

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #557fea;
/* rgb */ color: rgb(85, 127, 234);
/* oklch */ color: oklch(62.0% 0.168 265.6);

Tailwind

colors: {
  custom: {
    50: '#93a3f1',
    500: '#557fea',
    950: '#000000',
  },
}

SCSS

$custom: #557fea;
$custom-light: #93a3f1;
$custom-dark: #000000;

JSON

{
  "hex": "#557fea",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 234
  },
  "hsl": {
    "h": 223.087,
    "s": 78.01,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61967,
    "c": 0.1678,
    "h": 265.6
  },
  "luminance": 0.23051
}

Semantic roles & 50–950 ramp

primary

#557FEA

secondary

#E8D9B2

accent

#A00BDA

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #557FEA

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

Preview Lab → · Contrast checker → · Palette generator →