#557FC7#557FC7

#557FC7 is a mid, vivid blue. Relative luminance 0.212; OKLCH L 59.9% C 0.120 H 260.6°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#557FC7
RGB	rgb(85, 127, 199)
HSL	hsl(218, 50%, 56%)
HSV	hsv(218, 57%, 78%)
CMYK	cmyk(57.3%, 36.2%, 0%, 22%)
CIE-LAB	lab(53.20, 7.03, -41.86)
CIE-LCH	lch(53.20, 42.44, 279.53°)
OKLab	oklab(59.86% -0.0196 -0.1185)
OKLCH	oklch(59.86% 0.12 260.6)
XYZ	xyz(21.6409, 21.2318, 56.9795)
Luminance	0.2123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FC7 #C79D55

analogous

#55B8C7 #557FC7 #6455C7

triadic

#557FC7 #C7557F #7FC755

tetradic

#557FC7 #C755B8 #C79D55 #55C764

square

#557FC7 #C755B8 #C79D55 #55C764

split-complementary

#557FC7 #C76455 #B8C755

monochromatic

#28467A #3761A8 #557FC7 #83A2D6 #B1C4E5

Accessibility & contrast

On white

4.00

#557FC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#557FC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FC7

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FC7	#FFFFFF	#000000	##000000
##557FC7	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6185CA

Deuteranopia (green-blind)

#537AC5

Tritanopia (blue-blind)

#008F99

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557fc7;
/* rgb */ color: rgb(85, 127, 199);
/* oklch */ color: oklch(59.9% 0.120 260.6);

Tailwind

colors: {
  custom: {
    50: '#8da3d8',
    500: '#557fc7',
    950: '#000000',
  },
}

SCSS

$custom: #557fc7;
$custom-light: #8da3d8;
$custom-dark: #000000;

JSON

{
  "hex": "#557fc7",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 199
  },
  "hsl": {
    "h": 217.895,
    "s": 50.442,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59863,
    "c": 0.12007,
    "h": 260.6
  },
  "luminance": 0.21234
}

Semantic roles & 50–950 ramp

primary

#557FC7

secondary

#D4C2A4

accent

#A64EDA

background

#F9FAFD

surface

#F1F3FA

border

#CBCDD3

text

#0D0F14

muted

#7E7F83

Preview Lab

Preview with #557FC7

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

Preview Lab → · Contrast checker → · Palette generator →