#557EBC#557EBC

#557EBC is a mid, moderate blue. Relative luminance 0.205; OKLCH L 59.0% C 0.106 H 258.4°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#557EBC
RGB	rgb(85, 126, 188)
HSL	hsl(216, 43%, 54%)
HSV	hsv(216, 55%, 74%)
CMYK	cmyk(54.8%, 33%, 0%, 26.3%)
CIE-LAB	lab(52.38, 4.05, -36.87)
CIE-LCH	lch(52.38, 37.09, 276.27°)
OKLab	oklab(59.05% -0.0213 -0.1039)
OKLCH	oklch(59.05% 0.106 258.4)
XYZ	xyz(20.2811, 20.4823, 50.4519)
Luminance	0.2048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557EBC #BC9355

analogous

#55B1BC #557EBC #5F55BC

triadic

#557EBC #BC557E #7EBC55

tetradic

#557EBC #BC55B1 #BC9355 #55BC5F

square

#557EBC #BC55B1 #BC9355 #55BC5F

split-complementary

#557EBC #BC5F55 #B1BC55

monochromatic

#2B456C #3C6198 #557EBC #819FCD #ADC1DF

Accessibility & contrast

On white

4.12

#557EBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#557EBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557EBC

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557EBC	#FFFFFF	#000000	##000000
##557EBC	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)

#6582BF

Deuteranopia (green-blind)

#5879BB

Tritanopia (blue-blind)

#168C94

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557ebc;
/* rgb */ color: rgb(85, 126, 188);
/* oklch */ color: oklch(59.0% 0.106 258.4);

Tailwind

colors: {
  custom: {
    50: '#8ca3d0',
    500: '#557ebc',
    950: '#000000',
  },
}

SCSS

$custom: #557ebc;
$custom-light: #8ca3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#557ebc",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 188
  },
  "hsl": {
    "h": 216.117,
    "s": 43.46,
    "l": 53.529
  },
  "oklch": {
    "l": 0.59045,
    "c": 0.10611,
    "h": 258.4
  },
  "luminance": 0.20484
}

Semantic roles & 50–950 ramp

primary

#557EBC

secondary

#CCBBA0

accent

#A155D3

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0D0F14

muted

#7D7F82

Preview Lab

Preview with #557EBC

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

Preview Lab → · Contrast checker → · Palette generator →