#557FC9#557FC9

#557FC9 is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.0% C 0.123 H 261.0°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#557FC9
RGB	rgb(85, 127, 201)
HSL	hsl(218, 52%, 56%)
HSV	hsv(218, 58%, 79%)
CMYK	cmyk(57.7%, 36.8%, 0%, 21.2%)
CIE-LAB	lab(53.30, 7.69, -42.83)
CIE-LCH	lch(53.30, 43.52, 280.18°)
OKLab	oklab(59.98% -0.0191 -0.1213)
OKLCH	oklch(59.98% 0.123 261)
XYZ	xyz(21.8747, 21.3253, 58.2105)
Luminance	0.2133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FC9 #C99F55

analogous

#55B9C9 #557FC9 #6555C9

triadic

#557FC9 #C9557F #7FC955

tetradic

#557FC9 #C955B9 #C99F55 #55C965

square

#557FC9 #C955B9 #C99F55 #55C965

split-complementary

#557FC9 #C96555 #B9C955

monochromatic

#27467C #3660AB #557FC9 #83A2D8 #B2C5E7

Accessibility & contrast

On white

3.99

#557FC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#557FC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FC9

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FC9	#FFFFFF	#000000	##000000
##557FC9	1.00	3.99	5.27	5.27
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6085CC

Deuteranopia (green-blind)

#517AC7

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557fc9;
/* rgb */ color: rgb(85, 127, 201);
/* oklch */ color: oklch(60.0% 0.123 261.0);

Tailwind

colors: {
  custom: {
    50: '#8ea3da',
    500: '#557fc9',
    950: '#000000',
  },
}

SCSS

$custom: #557fc9;
$custom-light: #8ea3da;
$custom-dark: #000000;

JSON

{
  "hex": "#557fc9",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 201
  },
  "hsl": {
    "h": 218.276,
    "s": 51.786,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59975,
    "c": 0.12282,
    "h": 261
  },
  "luminance": 0.21327
}

Semantic roles & 50–950 ramp

primary

#557FC9

secondary

#D5C4A5

accent

#A84DDB

background

#F9FAFD

surface

#F1F3FA

border

#CBCDD3

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #557FC9

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

Preview Lab → · Contrast checker → · Palette generator →