#557ADA#557ADA

#557ADA is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.9% C 0.152 H 266.1°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#557ADA
RGB	rgb(85, 122, 218)
HSL	hsl(223, 64%, 59%)
HSV	hsv(223, 61%, 85%)
CMYK	cmyk(61%, 44%, 0%, 14.5%)
CIE-LAB	lab(52.85, 16.41, -53.18)
CIE-LCH	lch(52.85, 55.65, 287.15°)
OKLab	oklab(59.93% -0.0104 -0.1517)
OKLCH	oklch(59.93% 0.152 266.1)
XYZ	xyz(23.3564, 20.9103, 69.1213)
Luminance	0.2091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557ADA #DAB555

analogous

#55BDDA #557ADA #7355DA

triadic

#557ADA #DA557A #7ADA55

tetradic

#557ADA #DA55BD #DAB555 #55DA73

square

#557ADA #DA55BD #DAB555 #55DA73

split-complementary

#557ADA #DA7355 #BDDA55

monochromatic

#204194 #2B56C7 #557ADA #87A1E5 #BAC9F0

Accessibility & contrast

On white

4.05

#557ADA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#557ADA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557ADA

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557ADA	#FFFFFF	#000000	##000000
##557ADA	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D85DE

Deuteranopia (green-blind)

#3979D8

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557ada;
/* rgb */ color: rgb(85, 122, 218);
/* oklch */ color: oklch(59.9% 0.152 266.1);

Tailwind

colors: {
  custom: {
    50: '#90a0e6',
    500: '#557ada',
    950: '#000000',
  },
}

SCSS

$custom: #557ada;
$custom-light: #90a0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#557ada",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 218
  },
  "hsl": {
    "h": 223.308,
    "s": 64.251,
    "l": 59.412
  },
  "oklch": {
    "l": 0.59926,
    "c": 0.15204,
    "h": 266.1
  },
  "luminance": 0.20912
}

Semantic roles & 50–950 ramp

primary

#557ADA

secondary

#DFD1AB

accent

#B941E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557ADA

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

Preview Lab → · Contrast checker → · Palette generator →