#557FDB#557FDB

#557FDB is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.0% C 0.147 H 264.0°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#557FDB
RGB	rgb(85, 127, 219)
HSL	hsl(221, 65%, 60%)
HSV	hsv(221, 61%, 86%)
CMYK	cmyk(61.2%, 42%, 0%, 14.1%)
CIE-LAB	lab(54.26, 13.69, -51.49)
CIE-LCH	lch(54.26, 53.28, 284.89°)
OKLab	oklab(61.03% -0.0153 -0.1467)
OKLCH	oklch(61.03% 0.147 264)
XYZ	xyz(24.1174, 22.2224, 70.0225)
Luminance	0.2223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FDB #DBB155

analogous

#55C2DB #557FDB #6E55DB

triadic

#557FDB #DB557F #7FDB55

tetradic

#557FDB #DB55C2 #DBB155 #55DB6E

square

#557FDB #DB55C2 #DBB155 #55DB6E

split-complementary

#557FDB #DB6E55 #C2DB55

monochromatic

#204596 #2A5CC8 #557FDB #88A5E6 #BACBF0

Accessibility & contrast

On white

3.86

#557FDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#557FDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FDB

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FDB	#FFFFFF	#000000	##000000
##557FDB	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5688DF

Deuteranopia (green-blind)

#427CD9

Tritanopia (blue-blind)

#0094A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557fdb;
/* rgb */ color: rgb(85, 127, 219);
/* oklch */ color: oklch(61.0% 0.147 264.0);

Tailwind

colors: {
  custom: {
    50: '#90a3e7',
    500: '#557fdb',
    950: '#000000',
  },
}

SCSS

$custom: #557fdb;
$custom-light: #90a3e7;
$custom-dark: #000000;

JSON

{
  "hex": "#557fdb",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 219
  },
  "hsl": {
    "h": 221.194,
    "s": 65.049,
    "l": 59.608
  },
  "oklch": {
    "l": 0.61029,
    "c": 0.14746,
    "h": 264
  },
  "luminance": 0.22225
}

Semantic roles & 50–950 ramp

primary

#557FDB

secondary

#E0D0AC

accent

#B340E8

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #557FDB

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

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