#557BD3#557BD3

#557BD3 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.7% C 0.141 H 264.9°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#557BD3
RGB	rgb(85, 123, 211)
HSL	hsl(222, 59%, 58%)
HSV	hsv(222, 60%, 83%)
CMYK	cmyk(59.7%, 41.7%, 0%, 17.3%)
CIE-LAB	lab(52.73, 13.44, -49.42)
CIE-LCH	lch(52.73, 51.22, 285.22°)
OKLab	oklab(59.7% -0.0126 -0.1406)
OKLCH	oklch(59.7% 0.141 264.9)
XYZ	xyz(22.5831, 20.7984, 64.4398)
Luminance	0.2080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BD3 #D3AD55

analogous

#55BAD3 #557BD3 #6E55D3

triadic

#557BD3 #D3557B #7BD355

tetradic

#557BD3 #D355BA #D3AD55 #55D36E

square

#557BD3 #D355BA #D3AD55 #55D36E

split-complementary

#557BD3 #D36E55 #BAD355

monochromatic

#24438A #305ABB #557BD3 #86A1E0 #B6C6EC

Accessibility & contrast

On white

4.07

#557BD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#557BD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BD3

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BD3	#FFFFFF	#000000	##000000
##557BD3	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5484D6

Deuteranopia (green-blind)

#4379D1

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557bd3;
/* rgb */ color: rgb(85, 123, 211);
/* oklch */ color: oklch(59.7% 0.141 264.9);

Tailwind

colors: {
  custom: {
    50: '#8fa0e1',
    500: '#557bd3',
    950: '#000000',
  },
}

SCSS

$custom: #557bd3;
$custom-light: #8fa0e1;
$custom-dark: #000000;

JSON

{
  "hex": "#557bd3",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 211
  },
  "hsl": {
    "h": 221.905,
    "s": 58.879,
    "l": 58.039
  },
  "oklch": {
    "l": 0.59703,
    "c": 0.14121,
    "h": 264.9
  },
  "luminance": 0.208
}

Semantic roles & 50–950 ramp

primary

#557BD3

secondary

#DBCCA9

accent

#B346E2

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557BD3

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

Preview Lab → · Contrast checker → · Palette generator →