#557ECD#557ECD

#557ECD is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.0% C 0.129 H 262.4°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#557ECD
RGB	rgb(85, 126, 205)
HSL	hsl(220, 55%, 57%)
HSV	hsv(220, 59%, 80%)
CMYK	cmyk(58.5%, 38.5%, 0%, 19.6%)
CIE-LAB	lab(53.23, 9.62, -45.22)
CIE-LCH	lch(53.23, 46.23, 282.00°)
OKLab	oklab(59.99% -0.0171 -0.1283)
OKLCH	oklch(59.99% 0.129 262.4)
XYZ	xyz(22.2228, 21.2589, 60.6781)
Luminance	0.2126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557ECD #CDA455

analogous

#55BACD #557ECD #6855CD

triadic

#557ECD #CD557E #7ECD55

tetradic

#557ECD #CD55BA #CDA455 #55CD68

square

#557ECD #CD55BA #CDA455 #55CD68

split-complementary

#557ECD #CD6855 #BACD55

monochromatic

#264582 #345FB1 #557ECD #84A2DB #B4C6E9

Accessibility & contrast

On white

4.00

#557ECD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#557ECD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557ECD

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557ECD	#FFFFFF	#000000	##000000
##557ECD	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D85D0

Deuteranopia (green-blind)

#4D7ACB

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557ecd;
/* rgb */ color: rgb(85, 126, 205);
/* oklch */ color: oklch(60.0% 0.129 262.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#557ecd",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 205
  },
  "hsl": {
    "h": 219.5,
    "s": 54.545,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59987,
    "c": 0.12943,
    "h": 262.4
  },
  "luminance": 0.21261
}

Semantic roles & 50–950 ramp

primary

#557ECD

secondary

#D7C7A6

accent

#AB4ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #557ECD

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

Preview Lab → · Contrast checker → · Palette generator →