#557BCF#557BCF

#557BCF is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.5% C 0.136 H 264.3°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#557BCF
RGB	rgb(85, 123, 207)
HSL	hsl(221, 56%, 57%)
HSV	hsv(221, 59%, 81%)
CMYK	cmyk(58.9%, 40.6%, 0%, 18.8%)
CIE-LAB	lab(52.51, 12.10, -47.50)
CIE-LCH	lch(52.51, 49.02, 284.30°)
OKLab	oklab(59.46% -0.0134 -0.135)
OKLCH	oklch(59.46% 0.136 264.3)
XYZ	xyz(22.0879, 20.6004, 61.8317)
Luminance	0.2060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BCF #CFA955

analogous

#55B8CF #557BCF #6C55CF

triadic

#557BCF #CF557B #7BCF55

tetradic

#557BCF #CF55B8 #CFA955 #55CF6C

square

#557BCF #CF55B8 #CFA955 #55CF6C

split-complementary

#557BCF #CF6C55 #B8CF55

monochromatic

#254384 #335BB4 #557BCF #85A0DC #B4C5EA

Accessibility & contrast

On white

4.10

#557BCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#557BCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BCF

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BCF	#FFFFFF	#000000	##000000
##557BCF	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5783D2

Deuteranopia (green-blind)

#4678CD

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557bcf;
/* rgb */ color: rgb(85, 123, 207);
/* oklch */ color: oklch(59.5% 0.136 264.3);

Tailwind

colors: {
  custom: {
    50: '#8ea0de',
    500: '#557bcf',
    950: '#000000',
  },
}

SCSS

$custom: #557bcf;
$custom-light: #8ea0de;
$custom-dark: #000000;

JSON

{
  "hex": "#557bcf",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 207
  },
  "hsl": {
    "h": 221.311,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.59463,
    "c": 0.13569,
    "h": 264.3
  },
  "luminance": 0.20602
}

Semantic roles & 50–950 ramp

primary

#557BCF

secondary

#D9C9A7

accent

#B049DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557BCF

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

Preview Lab → · Contrast checker → · Palette generator →