#557EC7#557EC7

#557EC7 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.6% C 0.121 H 261.2°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#557EC7
RGB	rgb(85, 126, 199)
HSL	hsl(218, 50%, 56%)
HSV	hsv(218, 57%, 78%)
CMYK	cmyk(57.3%, 36.7%, 0%, 22%)
CIE-LAB	lab(52.92, 7.63, -42.30)
CIE-LCH	lch(52.92, 42.98, 280.23°)
OKLab	oklab(59.65% -0.0185 -0.1198)
OKLCH	oklch(59.65% 0.121 261.2)
XYZ	xyz(21.5124, 20.9748, 56.9366)
Luminance	0.2098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557EC7 #C79E55

analogous

#55B7C7 #557EC7 #6555C7

triadic

#557EC7 #C7557E #7EC755

tetradic

#557EC7 #C755B7 #C79E55 #55C765

square

#557EC7 #C755B7 #C79E55 #55C765

split-complementary

#557EC7 #C76555 #B7C755

monochromatic

#28457A #3760A8 #557EC7 #83A1D6 #B1C4E5

Accessibility & contrast

On white

4.04

#557EC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#557EC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557EC7

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557EC7	#FFFFFF	#000000	##000000
##557EC7	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6084CA

Deuteranopia (green-blind)

#5179C5

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557ec7;
/* rgb */ color: rgb(85, 126, 199);
/* oklch */ color: oklch(59.6% 0.121 261.2);

Tailwind

colors: {
  custom: {
    50: '#8da3d8',
    500: '#557ec7',
    950: '#000000',
  },
}

SCSS

$custom: #557ec7;
$custom-light: #8da3d8;
$custom-dark: #000000;

JSON

{
  "hex": "#557ec7",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 199
  },
  "hsl": {
    "h": 218.421,
    "s": 50.442,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59646,
    "c": 0.12119,
    "h": 261.2
  },
  "luminance": 0.20977
}

Semantic roles & 50–950 ramp

primary

#557EC7

secondary

#D4C3A4

accent

#A84EDA

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F14

muted

#7E7E83

Preview Lab

Preview with #557EC7

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

Preview Lab → · Contrast checker → · Palette generator →