#557FD9#557FD9

#557FD9 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 60.9% C 0.145 H 263.8°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#557FD9
RGB	rgb(85, 127, 217)
HSL	hsl(221, 63%, 59%)
HSV	hsv(221, 61%, 85%)
CMYK	cmyk(60.8%, 41.5%, 0%, 14.9%)
CIE-LAB	lab(54.15, 13.02, -50.54)
CIE-LCH	lch(54.15, 52.19, 284.44°)
OKLab	oklab(60.91% -0.0157 -0.1439)
OKLCH	oklch(60.91% 0.145 263.8)
XYZ	xyz(23.8557, 22.1177, 68.6442)
Luminance	0.2212 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FD9 #D9AF55

analogous

#55C1D9 #557FD9 #6D55D9

triadic

#557FD9 #D9557F #7FD955

tetradic

#557FD9 #D955C1 #D9AF55 #55D96D

square

#557FD9 #D955C1 #D9AF55 #55D96D

split-complementary

#557FD9 #D96D55 #C1D955

monochromatic

#214593 #2C5DC5 #557FD9 #87A5E4 #B9CAEF

Accessibility & contrast

On white

3.87

#557FD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#557FD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FD9

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FD9	#FFFFFF	#000000	##000000
##557FD9	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5788DD

Deuteranopia (green-blind)

#447CD7

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557fd9;
/* rgb */ color: rgb(85, 127, 217);
/* oklch */ color: oklch(60.9% 0.145 263.8);

Tailwind

colors: {
  custom: {
    50: '#90a3e5',
    500: '#557fd9',
    950: '#000000',
  },
}

SCSS

$custom: #557fd9;
$custom-light: #90a3e5;
$custom-dark: #000000;

JSON

{
  "hex": "#557fd9",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 217
  },
  "hsl": {
    "h": 220.909,
    "s": 63.462,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60908,
    "c": 0.14473,
    "h": 263.8
  },
  "luminance": 0.2212
}

Semantic roles & 50–950 ramp

primary

#557FD9

secondary

#DFCEAB

accent

#B241E6

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #557FD9

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

Preview Lab → · Contrast checker → · Palette generator →