#557DCC#557DCC

#557DCC is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.7% C 0.129 H 262.8°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#557DCC
RGB	rgb(85, 125, 204)
HSL	hsl(220, 54%, 57%)
HSV	hsv(220, 58%, 80%)
CMYK	cmyk(58.3%, 38.7%, 0%, 20%)
CIE-LAB	lab(52.90, 9.89, -45.17)
CIE-LCH	lch(52.90, 46.24, 282.35°)
OKLab	oklab(59.71% -0.0162 -0.1282)
OKLCH	oklch(59.71% 0.129 262.8)
XYZ	xyz(21.9753, 20.9563, 60.0020)
Luminance	0.2096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DCC #CCA455

analogous

#55B9CC #557DCC #6955CC

triadic

#557DCC #CC557D #7DCC55

tetradic

#557DCC #CC55B9 #CCA455 #55CC69

square

#557DCC #CC55B9 #CCA455 #55CC69

split-complementary

#557DCC #CC6955 #B9CC55

monochromatic

#264580 #355EAF #557DCC #84A1DA #B3C5E8

Accessibility & contrast

On white

4.04

#557DCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#557DCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DCC

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DCC	#FFFFFF	#000000	##000000
##557DCC	1.00	4.04	5.19	5.19
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C84CF

Deuteranopia (green-blind)

#4C79CA

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557dcc;
/* rgb */ color: rgb(85, 125, 204);
/* oklch */ color: oklch(59.7% 0.129 262.8);

Tailwind

colors: {
  custom: {
    50: '#8ea2dc',
    500: '#557dcc',
    950: '#000000',
  },
}

SCSS

$custom: #557dcc;
$custom-light: #8ea2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#557dcc",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 204
  },
  "hsl": {
    "h": 219.832,
    "s": 53.846,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59714,
    "c": 0.1292,
    "h": 262.8
  },
  "luminance": 0.20958
}

Semantic roles & 50–950 ramp

primary

#557DCC

secondary

#D7C6A6

accent

#AC4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #557DCC

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

Preview Lab → · Contrast checker → · Palette generator →