#557BD7#557BD7

#557BD7 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.9% C 0.147 H 265.3°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#557BD7
RGB	rgb(85, 123, 215)
HSL	hsl(222, 62%, 59%)
HSV	hsv(222, 60%, 84%)
CMYK	cmyk(60.5%, 42.8%, 0%, 15.7%)
CIE-LAB	lab(52.95, 14.78, -51.33)
CIE-LCH	lch(52.95, 53.41, 286.07°)
OKLab	oklab(59.95% -0.0119 -0.1462)
OKLCH	oklch(59.95% 0.147 265.3)
XYZ	xyz(23.0908, 21.0015, 67.1137)
Luminance	0.2100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BD7 #D7B155

analogous

#55BCD7 #557BD7 #7055D7

triadic

#557BD7 #D7557B #7BD755

tetradic

#557BD7 #D755BC #D7B155 #55D770

square

#557BD7 #D755BC #D7B155 #55D770

split-complementary

#557BD7 #D77055 #BCD755

monochromatic

#224290 #2D59C1 #557BD7 #87A1E3 #B8C8EE

Accessibility & contrast

On white

4.04

#557BD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#557BD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BD7

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BD7	#FFFFFF	#000000	##000000
##557BD7	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)

#5185DB

Deuteranopia (green-blind)

#3E79D5

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557bd7;
/* rgb */ color: rgb(85, 123, 215);
/* oklch */ color: oklch(59.9% 0.147 265.3);

Tailwind

colors: {
  custom: {
    50: '#90a0e4',
    500: '#557bd7',
    950: '#000000',
  },
}

SCSS

$custom: #557bd7;
$custom-light: #90a0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#557bd7",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 215
  },
  "hsl": {
    "h": 222.462,
    "s": 61.905,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59947,
    "c": 0.14672,
    "h": 265.3
  },
  "luminance": 0.21004
}

Semantic roles & 50–950 ramp

primary

#557BD7

secondary

#DECFAA

accent

#B643E5

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E15

muted

#7E7E84

Preview Lab

Preview with #557BD7

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

Preview Lab → · Contrast checker → · Palette generator →