#557DDF#557DDF

#557DDF is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.9% C 0.155 H 265.4°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#557DDF
RGB	rgb(85, 125, 223)
HSL	hsl(223, 68%, 60%)
HSV	hsv(223, 62%, 87%)
CMYK	cmyk(61.9%, 43.9%, 0%, 12.5%)
CIE-LAB	lab(53.95, 16.26, -54.24)
CIE-LCH	lch(53.95, 56.63, 286.69°)
OKLab	oklab(60.86% -0.0126 -0.1548)
OKLCH	oklch(60.86% 0.155 265.4)
XYZ	xyz(24.3946, 21.9241, 72.7439)
Luminance	0.2193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DDF #DFB755

analogous

#55C2DF #557DDF #7255DF

triadic

#557DDF #DF557D #7DDF55

tetradic

#557DDF #DF55C2 #DFB755 #55DF72

square

#557DDF #DF55C2 #DFB755 #55DF72

split-complementary

#557DDF #DF7255 #C2DF55

monochromatic

#1D429C #2758D0 #557DDF #89A4E9 #BCCCF2

Accessibility & contrast

On white

3.90

#557DDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#557DDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DDF

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DDF	#FFFFFF	#000000	##000000
##557DDF	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F88E3

Deuteranopia (green-blind)

#3A7BDD

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557ddf;
/* rgb */ color: rgb(85, 125, 223);
/* oklch */ color: oklch(60.9% 0.155 265.4);

Tailwind

colors: {
  custom: {
    50: '#91a2e9',
    500: '#557ddf',
    950: '#000000',
  },
}

SCSS

$custom: #557ddf;
$custom-light: #91a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#557ddf",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 223
  },
  "hsl": {
    "h": 222.609,
    "s": 68.317,
    "l": 60.392
  },
  "oklch": {
    "l": 0.60859,
    "c": 0.15529,
    "h": 265.4
  },
  "luminance": 0.21926
}

Semantic roles & 50–950 ramp

primary

#557DDF

secondary

#E2D3AE

accent

#9A15D0

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #557DDF

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

Preview Lab → · Contrast checker → · Palette generator →