#557BC7#557BC7

#557BC7 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.0% C 0.125 H 263.0°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#557BC7
RGB	rgb(85, 123, 199)
HSL	hsl(220, 50%, 56%)
HSV	hsv(220, 57%, 78%)
CMYK	cmyk(57.3%, 38.2%, 0%, 22%)
CIE-LAB	lab(52.08, 9.45, -43.62)
CIE-LCH	lch(52.08, 44.64, 282.22°)
OKLab	oklab(59% -0.0151 -0.1237)
OKLCH	oklch(59% 0.125 263)
XYZ	xyz(21.1345, 20.2190, 56.8107)
Luminance	0.2022 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BC7 #C7A155

analogous

#55B4C7 #557BC7 #6855C7

triadic

#557BC7 #C7557B #7BC755

tetradic

#557BC7 #C755B4 #C7A155 #55C768

square

#557BC7 #C755B4 #C7A155 #55C768

split-complementary

#557BC7 #C76855 #B4C755

monochromatic

#28437A #375DA8 #557BC7 #839FD6 #B1C2E5

Accessibility & contrast

On white

4.16

#557BC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#557BC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BC7

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BC7	#FFFFFF	#000000	##000000
##557BC7	1.00	4.16	5.04	5.04
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B82CA

Deuteranopia (green-blind)

#4D77C5

Tritanopia (blue-blind)

#008C97

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557bc7;
/* rgb */ color: rgb(85, 123, 199);
/* oklch */ color: oklch(59.0% 0.125 263.0);

Tailwind

colors: {
  custom: {
    50: '#8da0d8',
    500: '#557bc7',
    950: '#000000',
  },
}

SCSS

$custom: #557bc7;
$custom-light: #8da0d8;
$custom-dark: #000000;

JSON

{
  "hex": "#557bc7",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 199
  },
  "hsl": {
    "h": 220,
    "s": 50.442,
    "l": 55.686
  },
  "oklch": {
    "l": 0.58996,
    "c": 0.12459,
    "h": 263
  },
  "luminance": 0.20221
}

Semantic roles & 50–950 ramp

primary

#557BC7

secondary

#D4C4A4

accent

#AB4EDA

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #557BC7

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

Preview Lab → · Contrast checker → · Palette generator →