#557FDC#557FDC

#557FDC is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.1% C 0.149 H 264.2°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#557FDC
RGB	rgb(85, 127, 220)
HSL	hsl(221, 66%, 60%)
HSV	hsv(221, 61%, 86%)
CMYK	cmyk(61.4%, 42.3%, 0%, 13.7%)
CIE-LAB	lab(54.32, 14.03, -51.96)
CIE-LCH	lch(54.32, 53.82, 285.11°)
OKLab	oklab(61.09% -0.0151 -0.1481)
OKLCH	oklch(61.09% 0.149 264.2)
XYZ	xyz(24.2495, 22.2752, 70.7179)
Luminance	0.2228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FDC #DCB255

analogous

#55C3DC #557FDC #6E55DC

triadic

#557FDC #DC557F #7FDC55

tetradic

#557FDC #DC55C3 #DCB255 #55DC6E

square

#557FDC #DC55C3 #DCB255 #55DC6E

split-complementary

#557FDC #DC6E55 #C3DC55

monochromatic

#1F4597 #2A5CCA #557FDC #88A5E6 #BBCBF1

Accessibility & contrast

On white

3.85

#557FDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#557FDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FDC

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FDC	#FFFFFF	#000000	##000000
##557FDC	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5589E0

Deuteranopia (green-blind)

#417CDA

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557fdc;
/* rgb */ color: rgb(85, 127, 220);
/* oklch */ color: oklch(61.1% 0.149 264.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#557fdc",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 220
  },
  "hsl": {
    "h": 221.333,
    "s": 65.854,
    "l": 59.804
  },
  "oklch": {
    "l": 0.6109,
    "c": 0.14883,
    "h": 264.2
  },
  "luminance": 0.22277
}

Semantic roles & 50–950 ramp

primary

#557FDC

secondary

#E0D0AC

accent

#B43FE9

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #557FDC

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

Preview Lab → · Contrast checker → · Palette generator →