#557BCD#557BCD

#557BCD is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.3% C 0.133 H 264.0°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#557BCD
RGB	rgb(85, 123, 205)
HSL	hsl(221, 55%, 57%)
HSV	hsv(221, 59%, 80%)
CMYK	cmyk(58.5%, 40%, 0%, 19.6%)
CIE-LAB	lab(52.40, 11.44, -46.54)
CIE-LCH	lch(52.40, 47.92, 283.81°)
OKLab	oklab(59.35% -0.0138 -0.1322)
OKLCH	oklch(59.35% 0.133 264)
XYZ	xyz(21.8449, 20.5032, 60.5521)
Luminance	0.2051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BCD #CDA755

analogous

#55B7CD #557BCD #6B55CD

triadic

#557BCD #CD557B #7BCD55

tetradic

#557BCD #CD55B7 #CDA755 #55CD6B

square

#557BCD #CD55B7 #CDA755 #55CD6B

split-complementary

#557BCD #CD6B55 #B7CD55

monochromatic

#264382 #345CB1 #557BCD #84A0DB #B4C4E9

Accessibility & contrast

On white

4.12

#557BCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#557BCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BCD

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BCD	#FFFFFF	#000000	##000000
##557BCD	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5883D0

Deuteranopia (green-blind)

#4878CB

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557bcd;
/* rgb */ color: rgb(85, 123, 205);
/* oklch */ color: oklch(59.3% 0.133 264.0);

Tailwind

colors: {
  custom: {
    50: '#8ea0dd',
    500: '#557bcd',
    950: '#000000',
  },
}

SCSS

$custom: #557bcd;
$custom-light: #8ea0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#557bcd",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 205
  },
  "hsl": {
    "h": 221,
    "s": 54.545,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59345,
    "c": 0.13291,
    "h": 264
  },
  "luminance": 0.20505
}

Semantic roles & 50–950 ramp

primary

#557BCD

secondary

#D7C8A6

accent

#AF4ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557BCD

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

Preview Lab → · Contrast checker → · Palette generator →