#557DDB#557DDB

#557DDB is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.6% C 0.150 H 264.9°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#557DDB
RGB	rgb(85, 125, 219)
HSL	hsl(222, 65%, 60%)
HSV	hsv(222, 61%, 86%)
CMYK	cmyk(61.2%, 42.9%, 0%, 14.1%)
CIE-LAB	lab(53.72, 14.91, -52.36)
CIE-LCH	lch(53.72, 54.44, 285.89°)
OKLab	oklab(60.61% -0.0132 -0.1492)
OKLCH	oklch(60.61% 0.15 264.9)
XYZ	xyz(23.8617, 21.7109, 69.9372)
Luminance	0.2171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DDB #DBB355

analogous

#55C0DB #557DDB #7055DB

triadic

#557DDB #DB557D #7DDB55

tetradic

#557DDB #DB55C0 #DBB355 #55DB70

square

#557DDB #DB55C0 #DBB355 #55DB70

split-complementary

#557DDB #DB7055 #C0DB55

monochromatic

#204396 #2A5AC8 #557DDB #88A4E6 #BACAF0

Accessibility & contrast

On white

3.93

#557DDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#557DDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DDB

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DDB	#FFFFFF	#000000	##000000
##557DDB	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5287DF

Deuteranopia (green-blind)

#3E7BD9

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557ddb;
/* rgb */ color: rgb(85, 125, 219);
/* oklch */ color: oklch(60.6% 0.150 264.9);

Tailwind

colors: {
  custom: {
    50: '#90a2e7',
    500: '#557ddb',
    950: '#000000',
  },
}

SCSS

$custom: #557ddb;
$custom-light: #90a2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#557ddb",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 219
  },
  "hsl": {
    "h": 222.09,
    "s": 65.049,
    "l": 59.608
  },
  "oklch": {
    "l": 0.60611,
    "c": 0.14983,
    "h": 264.9
  },
  "luminance": 0.21713
}

Semantic roles & 50–950 ramp

primary

#557DDB

secondary

#E0D0AC

accent

#B640E8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #557DDB

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

Preview Lab → · Contrast checker → · Palette generator →