#577BBE#577BBE

#577BBE is a mid, moderate blue. Relative luminance 0.199; OKLCH L 58.6% C 0.111 H 262.0°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#577BBE
RGB	rgb(87, 123, 190)
HSL	hsl(219, 44%, 54%)
HSV	hsv(219, 54%, 75%)
CMYK	cmyk(54.2%, 35.3%, 0%, 25.5%)
CIE-LAB	lab(51.73, 6.94, -39.02)
CIE-LCH	lch(51.73, 39.64, 280.09°)
OKLab	oklab(58.6% -0.0154 -0.1102)
OKLCH	oklch(58.6% 0.111 262)
XYZ	xyz(20.3045, 19.9083, 51.4779)
Luminance	0.1991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BBE #BE9A57

analogous

#57AFBE #577BBE #6757BE

triadic

#577BBE #BE577B #7BBE57

tetradic

#577BBE #BE57AF #BE9A57 #57BE67

square

#577BBE #BE57AF #BE9A57 #57BE67

split-complementary

#577BBE #BE6757 #AFBE57

monochromatic

#2B436F #3C5E9C #577BBE #839ECF #AFC0E0

Accessibility & contrast

On white

4.22

#577BBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#577BBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BBE

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BBE	#FFFFFF	#000000	##000000
##577BBE	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6081C1

Deuteranopia (green-blind)

#5477BD

Tritanopia (blue-blind)

#1D8A93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #577bbe;
/* rgb */ color: rgb(87, 123, 190);
/* oklch */ color: oklch(58.6% 0.111 262.0);

Tailwind

colors: {
  custom: {
    50: '#8da0d2',
    500: '#577bbe',
    950: '#000000',
  },
}

SCSS

$custom: #577bbe;
$custom-light: #8da0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#577bbe",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 190
  },
  "hsl": {
    "h": 219.029,
    "s": 44.206,
    "l": 54.314
  },
  "oklch": {
    "l": 0.58603,
    "c": 0.11128,
    "h": 262
  },
  "luminance": 0.1991
}

Semantic roles & 50–950 ramp

primary

#577BBE

secondary

#CEBFA3

accent

#A754D4

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #577BBE

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

Preview Lab → · Contrast checker → · Palette generator →