#557CD0#557CD0

#557CD0 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.7% C 0.136 H 264.0°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#557CD0
RGB	rgb(85, 124, 208)
HSL	hsl(221, 57%, 57%)
HSV	hsv(221, 59%, 82%)
CMYK	cmyk(59.1%, 40.4%, 0%, 18.4%)
CIE-LAB	lab(52.84, 11.83, -47.54)
CIE-LCH	lch(52.84, 48.99, 283.97°)
OKLab	oklab(59.74% -0.0143 -0.1351)
OKLCH	oklch(59.74% 0.136 264)
XYZ	xyz(22.3352, 20.8988, 62.5191)
Luminance	0.2090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CD0 #D0A955

analogous

#55B9D0 #557CD0 #6C55D0

triadic

#557CD0 #D0557C #7CD055

tetradic

#557CD0 #D055B9 #D0A955 #55D06C

square

#557CD0 #D055B9 #D0A955 #55D06C

split-complementary

#557CD0 #D06C55 #B9D055

monochromatic

#254486 #325CB6 #557CD0 #85A1DD #B5C6EB

Accessibility & contrast

On white

4.05

#557CD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#557CD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CD0

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CD0	#FFFFFF	#000000	##000000
##557CD0	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5884D3

Deuteranopia (green-blind)

#4779CE

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557cd0;
/* rgb */ color: rgb(85, 124, 208);
/* oklch */ color: oklch(59.7% 0.136 264.0);

Tailwind

colors: {
  custom: {
    50: '#8fa1df',
    500: '#557cd0',
    950: '#000000',
  },
}

SCSS

$custom: #557cd0;
$custom-light: #8fa1df;
$custom-dark: #000000;

JSON

{
  "hex": "#557cd0",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 208
  },
  "hsl": {
    "h": 220.976,
    "s": 56.682,
    "l": 57.451
  },
  "oklch": {
    "l": 0.59735,
    "c": 0.13588,
    "h": 264
  },
  "luminance": 0.20901
}

Semantic roles & 50–950 ramp

primary

#557CD0

secondary

#D9C9A8

accent

#B048E0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557CD0

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

Preview Lab → · Contrast checker → · Palette generator →