#557DCF#557DCF

#557DCF is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.9% C 0.133 H 263.3°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#557DCF
RGB	rgb(85, 125, 207)
HSL	hsl(220, 56%, 57%)
HSV	hsv(220, 59%, 81%)
CMYK	cmyk(58.9%, 39.6%, 0%, 18.8%)
CIE-LAB	lab(53.06, 10.89, -46.63)
CIE-LCH	lch(53.06, 47.88, 283.14°)
OKLab	oklab(59.89% -0.0156 -0.1324)
OKLCH	oklch(59.89% 0.133 263.3)
XYZ	xyz(22.3385, 21.1016, 61.9152)
Luminance	0.2110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DCF #CFA755

analogous

#55BACF #557DCF #6A55CF

triadic

#557DCF #CF557D #7DCF55

tetradic

#557DCF #CF55BA #CFA755 #55CF6A

square

#557DCF #CF55BA #CFA755 #55CF6A

split-complementary

#557DCF #CF6A55 #BACF55

monochromatic

#254484 #335DB4 #557DCF #85A1DC #B4C6EA

Accessibility & contrast

On white

4.02

#557DCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#557DCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DCF

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DCF	#FFFFFF	#000000	##000000
##557DCF	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A85D2

Deuteranopia (green-blind)

#4A7ACD

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557dcf;
/* rgb */ color: rgb(85, 125, 207);
/* oklch */ color: oklch(59.9% 0.133 263.3);

Tailwind

colors: {
  custom: {
    50: '#8ea2de',
    500: '#557dcf',
    950: '#000000',
  },
}

SCSS

$custom: #557dcf;
$custom-light: #8ea2de;
$custom-dark: #000000;

JSON

{
  "hex": "#557dcf",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 207
  },
  "hsl": {
    "h": 220.328,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.59889,
    "c": 0.13334,
    "h": 263.3
  },
  "luminance": 0.21104
}

Semantic roles & 50–950 ramp

primary

#557DCF

secondary

#D9C8A7

accent

#AE49DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #557DCF

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

Preview Lab → · Contrast checker → · Palette generator →