#557BDD#557BDD

#557BDD is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.3% C 0.155 H 266.0°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#557BDD
RGB	rgb(85, 123, 221)
HSL	hsl(223, 67%, 60%)
HSV	hsv(223, 62%, 87%)
CMYK	cmyk(61.5%, 44.3%, 0%, 13.3%)
CIE-LAB	lab(53.29, 16.81, -54.16)
CIE-LCH	lch(53.29, 56.71, 287.24°)
OKLab	oklab(60.32% -0.0109 -0.1546)
OKLCH	oklch(60.32% 0.155 266)
XYZ	xyz(23.8759, 21.3156, 71.2487)
Luminance	0.2132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BDD #DDB755

analogous

#55BFDD #557BDD #7355DD

triadic

#557BDD #DD557B #7BDD55

tetradic

#557BDD #DD55BF #DDB755 #55DD73

square

#557BDD #DD55BF #DDB755 #55DD73

split-complementary

#557BDD #DD7355 #BFDD55

monochromatic

#1F4199 #2956CC #557BDD #88A3E7 #BBCAF1

Accessibility & contrast

On white

3.99

#557BDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#557BDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BDD

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BDD	#FFFFFF	#000000	##000000
##557BDD	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D86E1

Deuteranopia (green-blind)

#387ADB

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557bdd;
/* rgb */ color: rgb(85, 123, 221);
/* oklch */ color: oklch(60.3% 0.155 266.0);

Tailwind

colors: {
  custom: {
    50: '#91a0e8',
    500: '#557bdd',
    950: '#000000',
  },
}

SCSS

$custom: #557bdd;
$custom-light: #91a0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#557bdd",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 221
  },
  "hsl": {
    "h": 223.235,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.60321,
    "c": 0.15495,
    "h": 266
  },
  "luminance": 0.21318
}

Semantic roles & 50–950 ramp

primary

#557BDD

secondary

#E1D2AD

accent

#BA3EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BDD

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

Preview Lab → · Contrast checker → · Palette generator →