#557FDA#557FDA

#557FDA is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.0% C 0.146 H 263.9°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#557FDA
RGB	rgb(85, 127, 218)
HSL	hsl(221, 64%, 59%)
HSV	hsv(221, 61%, 85%)
CMYK	cmyk(61%, 41.7%, 0%, 14.5%)
CIE-LAB	lab(54.21, 13.35, -51.02)
CIE-LCH	lch(54.21, 52.74, 284.67°)
OKLab	oklab(60.97% -0.0155 -0.1453)
OKLCH	oklch(60.97% 0.146 263.9)
XYZ	xyz(23.9862, 22.1699, 69.3313)
Luminance	0.2217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FDA #DAB055

analogous

#55C1DA #557FDA #6E55DA

triadic

#557FDA #DA557F #7FDA55

tetradic

#557FDA #DA55C1 #DAB055 #55DA6E

square

#557FDA #DA55C1 #DAB055 #55DA6E

split-complementary

#557FDA #DA6E55 #C1DA55

monochromatic

#204594 #2B5CC7 #557FDA #87A5E5 #BACBF0

Accessibility & contrast

On white

3.86

#557FDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#557FDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FDA

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FDA	#FFFFFF	#000000	##000000
##557FDA	1.00	3.86	5.43	5.43
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5688DE

Deuteranopia (green-blind)

#437CD8

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557fda;
/* rgb */ color: rgb(85, 127, 218);
/* oklch */ color: oklch(61.0% 0.146 263.9);

Tailwind

colors: {
  custom: {
    50: '#90a3e6',
    500: '#557fda',
    950: '#000000',
  },
}

SCSS

$custom: #557fda;
$custom-light: #90a3e6;
$custom-dark: #000000;

JSON

{
  "hex": "#557fda",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 218
  },
  "hsl": {
    "h": 221.053,
    "s": 64.251,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60968,
    "c": 0.1461,
    "h": 263.9
  },
  "luminance": 0.22172
}

Semantic roles & 50–950 ramp

primary

#557FDA

secondary

#DFCFAB

accent

#B341E7

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #557FDA

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

Preview Lab → · Contrast checker → · Palette generator →