#557FBE#557FBE

#557FBE is a mid, moderate blue. Relative luminance 0.208; OKLCH L 59.4% C 0.108 H 258.3°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#557FBE
RGB	rgb(85, 127, 190)
HSL	hsl(216, 45%, 54%)
HSV	hsv(216, 55%, 75%)
CMYK	cmyk(55.3%, 33.2%, 0%, 25.5%)
CIE-LAB	lab(52.76, 4.10, -37.42)
CIE-LCH	lch(52.76, 37.64, 276.25°)
OKLab	oklab(59.37% -0.0219 -0.1055)
OKLCH	oklch(59.37% 0.108 258.3)
XYZ	xyz(20.6267, 20.8261, 51.6381)
Luminance	0.2083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FBE #BE9455

analogous

#55B4BE #557FBE #6055BE

triadic

#557FBE #BE557F #7FBE55

tetradic

#557FBE #BE55B4 #BE9455 #55BE60

square

#557FBE #BE55B4 #BE9455 #55BE60

split-complementary

#557FBE #BE6055 #B4BE55

monochromatic

#2A456E #3B619B #557FBE #81A0CF #AEC2E0

Accessibility & contrast

On white

4.07

#557FBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#557FBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FBE

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FBE	#FFFFFF	#000000	##000000
##557FBE	1.00	4.07	5.17	5.17
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6683C1

Deuteranopia (green-blind)

#5879BD

Tritanopia (blue-blind)

#118D96

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557fbe;
/* rgb */ color: rgb(85, 127, 190);
/* oklch */ color: oklch(59.4% 0.108 258.3);

Tailwind

colors: {
  custom: {
    50: '#8ca3d2',
    500: '#557fbe',
    950: '#000000',
  },
}

SCSS

$custom: #557fbe;
$custom-light: #8ca3d2;
$custom-dark: #000000;

JSON

{
  "hex": "#557fbe",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 190
  },
  "hsl": {
    "h": 216,
    "s": 44.681,
    "l": 53.922
  },
  "oklch": {
    "l": 0.59373,
    "c": 0.10778,
    "h": 258.3
  },
  "luminance": 0.20828
}

Semantic roles & 50–950 ramp

primary

#557FBE

secondary

#CEBCA1

accent

#A153D4

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0D0F14

muted

#7D7F82

Preview Lab

Preview with #557FBE

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

Preview Lab → · Contrast checker → · Palette generator →