#557AEF#557AEF

#557AEF is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.3% C 0.180 H 267.6°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#557AEF
RGB	rgb(85, 122, 239)
HSL	hsl(226, 83%, 64%)
HSV	hsv(226, 64%, 94%)
CMYK	cmyk(64.4%, 49%, 0%, 6.3%)
CIE-LAB	lab(54.11, 23.53, -62.93)
CIE-LCH	lch(54.11, 67.18, 290.50°)
OKLab	oklab(61.29% -0.0075 -0.1803)
OKLCH	oklch(61.29% 0.181 267.6)
XYZ	xyz(26.2805, 22.0799, 84.5215)
Luminance	0.2208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557AEF #EFCA55

analogous

#55C7EF #557AEF #7D55EF

triadic

#557AEF #EF557A #7AEF55

tetradic

#557AEF #EF55C7 #EFCA55 #55EF7D

square

#557AEF #EF55C7 #EFCA55 #55EF7D

split-complementary

#557AEF #EF7D55 #C7EF55

monochromatic

#1139B8 #1D4EEA #557AEF #8DA6F4 #C5D2FA

Accessibility & contrast

On white

3.88

#557AEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#557AEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557AEF

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557AEF	#FFFFFF	#000000	##000000
##557AEF	1.00	3.88	5.42	5.42
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A89F3

Deuteranopia (green-blind)

#0D7BED

Tritanopia (blue-blind)

#0095A9

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557aef;
/* rgb */ color: rgb(85, 122, 239);
/* oklch */ color: oklch(61.3% 0.180 267.6);

Tailwind

colors: {
  custom: {
    50: '#94a0f5',
    500: '#557aef',
    950: '#000000',
  },
}

SCSS

$custom: #557aef;
$custom-light: #94a0f5;
$custom-dark: #000000;

JSON

{
  "hex": "#557aef",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 239
  },
  "hsl": {
    "h": 225.584,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.61294,
    "c": 0.1805,
    "h": 267.6
  },
  "luminance": 0.22082
}

Semantic roles & 50–950 ramp

primary

#557AEF

secondary

#EBDEB5

accent

#AB06DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557AEF

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

Preview Lab → · Contrast checker → · Palette generator →