#557BCA#557BCA

#557BCA is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.2% C 0.129 H 263.5°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#557BCA
RGB	rgb(85, 123, 202)
HSL	hsl(221, 52%, 56%)
HSV	hsv(221, 58%, 79%)
CMYK	cmyk(57.9%, 39.1%, 0%, 20.8%)
CIE-LAB	lab(52.24, 10.44, -45.08)
CIE-LCH	lch(52.24, 46.28, 283.04°)
OKLab	oklab(59.17% -0.0145 -0.1279)
OKLCH	oklch(59.17% 0.129 263.5)
XYZ	xyz(21.4863, 20.3597, 58.6632)
Luminance	0.2036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BCA #CAA455

analogous

#55B6CA #557BCA #6A55CA

triadic

#557BCA #CA557B #7BCA55

tetradic

#557BCA #CA55B6 #CAA455 #55CA6A

square

#557BCA #CA55B6 #CAA455 #55CA6A

split-complementary

#557BCA #CA6A55 #B6CA55

monochromatic

#27437D #365CAC #557BCA #849FD9 #B2C3E7

Accessibility & contrast

On white

4.14

#557BCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#557BCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BCA

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BCA	#FFFFFF	#000000	##000000
##557BCA	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A82CD

Deuteranopia (green-blind)

#4A78C8

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557bca;
/* rgb */ color: rgb(85, 123, 202);
/* oklch */ color: oklch(59.2% 0.129 263.5);

Tailwind

colors: {
  custom: {
    50: '#8ea0da',
    500: '#557bca',
    950: '#000000',
  },
}

SCSS

$custom: #557bca;
$custom-light: #8ea0da;
$custom-dark: #000000;

JSON

{
  "hex": "#557bca",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 202
  },
  "hsl": {
    "h": 220.513,
    "s": 52.466,
    "l": 56.275
  },
  "oklch": {
    "l": 0.59169,
    "c": 0.12876,
    "h": 263.5
  },
  "luminance": 0.20361
}

Semantic roles & 50–950 ramp

primary

#557BCA

secondary

#D5C6A5

accent

#AD4CDC

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557BCA

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

Preview Lab → · Contrast checker → · Palette generator →