#557CDD#557CDD

#557CDD is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.5% C 0.154 H 265.6°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#557CDD
RGB	rgb(85, 124, 221)
HSL	hsl(223, 67%, 60%)
HSV	hsv(223, 62%, 87%)
CMYK	cmyk(61.5%, 43.9%, 0%, 13.3%)
CIE-LAB	lab(53.56, 16.19, -53.73)
CIE-LCH	lch(53.56, 56.12, 286.77°)
OKLab	oklab(60.53% -0.0119 -0.1533)
OKLCH	oklch(60.53% 0.154 265.6)
XYZ	xyz(24.0006, 21.5649, 71.2902)
Luminance	0.2157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CDD #DDB655

analogous

#55C0DD #557CDD #7255DD

triadic

#557CDD #DD557C #7CDD55

tetradic

#557CDD #DD55C0 #DDB655 #55DD72

square

#557CDD #DD55C0 #DDB655 #55DD72

split-complementary

#557CDD #DD7255 #C0DD55

monochromatic

#1F4299 #2958CC #557CDD #88A3E7 #BBCBF1

Accessibility & contrast

On white

3.95

#557CDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#557CDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CDD

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CDD	#FFFFFF	#000000	##000000
##557CDD	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F87E1

Deuteranopia (green-blind)

#3A7ADB

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557cdd;
/* rgb */ color: rgb(85, 124, 221);
/* oklch */ color: oklch(60.5% 0.154 265.6);

Tailwind

colors: {
  custom: {
    50: '#91a1e8',
    500: '#557cdd',
    950: '#000000',
  },
}

SCSS

$custom: #557cdd;
$custom-light: #91a1e8;
$custom-dark: #000000;

JSON

{
  "hex": "#557cdd",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 221
  },
  "hsl": {
    "h": 222.794,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.60527,
    "c": 0.15375,
    "h": 265.6
  },
  "luminance": 0.21567
}

Semantic roles & 50–950 ramp

primary

#557CDD

secondary

#E1D2AD

accent

#B83EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557CDD

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

Preview Lab → · Contrast checker → · Palette generator →