#577CBA#577CBA

#577CBA is a mid, moderate blue. Relative luminance 0.200; OKLCH L 58.6% C 0.105 H 260.3°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#577CBA
RGB	rgb(87, 124, 186)
HSL	hsl(218, 42%, 54%)
HSV	hsv(218, 53%, 73%)
CMYK	cmyk(53.2%, 33.3%, 0%, 27.1%)
CIE-LAB	lab(51.82, 5.06, -36.59)
CIE-LCH	lch(51.82, 36.94, 277.87°)
OKLab	oklab(58.61% -0.0176 -0.1031)
OKLCH	oklch(58.61% 0.105 260.3)
XYZ	xyz(19.9980, 19.9852, 49.2486)
Luminance	0.1999 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CBA #BA9557

analogous

#57ADBA #577CBA #6357BA

triadic

#577CBA #BA577C #7CBA57

tetradic

#577CBA #BA57AD #BA9557 #57BA63

square

#577CBA #BA57AD #BA9557 #57BA63

split-complementary

#577CBA #BA6357 #ADBA57

monochromatic

#2C436B #3E5F96 #577CBA #829ECC #AEC0DE

Accessibility & contrast

On white

4.20

#577CBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#577CBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CBA

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CBA	#FFFFFF	#000000	##000000
##577CBA	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381BD

Deuteranopia (green-blind)

#5877B9

Tritanopia (blue-blind)

#238A92

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577cba;
/* rgb */ color: rgb(87, 124, 186);
/* oklch */ color: oklch(58.6% 0.105 260.3);

Tailwind

colors: {
  custom: {
    50: '#8da1cf',
    500: '#577cba',
    950: '#000000',
  },
}

SCSS

$custom: #577cba;
$custom-light: #8da1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#577cba",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 186
  },
  "hsl": {
    "h": 217.576,
    "s": 41.772,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58607,
    "c": 0.10462,
    "h": 260.3
  },
  "luminance": 0.19987
}

Semantic roles & 50–950 ramp

primary

#577CBA

secondary

#CCBCA1

accent

#A356D2

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0E14

muted

#7D7E82

Preview Lab

Preview with #577CBA

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

Preview Lab → · Contrast checker → · Palette generator →