#557FCC#557FCC

#557FCC is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.1% C 0.127 H 261.7°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#557FCC
RGB	rgb(85, 127, 204)
HSL	hsl(219, 54%, 57%)
HSV	hsv(219, 58%, 80%)
CMYK	cmyk(58.3%, 37.7%, 0%, 20%)
CIE-LAB	lab(53.46, 8.68, -44.29)
CIE-LCH	lch(53.46, 45.14, 281.09°)
OKLab	oklab(60.15% -0.0184 -0.1256)
OKLCH	oklch(60.15% 0.127 261.7)
XYZ	xyz(22.2310, 21.4678, 60.0872)
Luminance	0.2147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FCC #CCA255

analogous

#55BACC #557FCC #6755CC

triadic

#557FCC #CC557F #7FCC55

tetradic

#557FCC #CC55BA #CCA255 #55CC67

square

#557FCC #CC55BA #CCA255 #55CC67

split-complementary

#557FCC #CC6755 #BACC55

monochromatic

#264680 #3560AF #557FCC #84A2DA #B3C6E8

Accessibility & contrast

On white

3.97

#557FCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#557FCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FCC

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FCC	#FFFFFF	#000000	##000000
##557FCC	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F86CF

Deuteranopia (green-blind)

#4F7BCA

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557fcc;
/* rgb */ color: rgb(85, 127, 204);
/* oklch */ color: oklch(60.1% 0.127 261.7);

Tailwind

colors: {
  custom: {
    50: '#8ea3dc',
    500: '#557fcc',
    950: '#000000',
  },
}

SCSS

$custom: #557fcc;
$custom-light: #8ea3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#557fcc",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 204
  },
  "hsl": {
    "h": 218.824,
    "s": 53.846,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60145,
    "c": 0.12693,
    "h": 261.7
  },
  "luminance": 0.2147
}

Semantic roles & 50–950 ramp

primary

#557FCC

secondary

#D7C6A6

accent

#A94BDD

background

#F9FAFD

surface

#F1F3FB

border

#CBCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #557FCC

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

Preview Lab → · Contrast checker → · Palette generator →