#577DB8#577DB8

#577DB8 is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.7% C 0.101 H 258.9°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#577DB8
RGB	rgb(87, 125, 184)
HSL	hsl(216, 41%, 53%)
HSV	hsv(216, 53%, 72%)
CMYK	cmyk(52.7%, 32.1%, 0%, 27.8%)
CIE-LAB	lab(52.01, 3.82, -35.15)
CIE-LCH	lch(52.01, 35.35, 276.20°)
OKLab	oklab(58.72% -0.0194 -0.0989)
OKLCH	oklch(58.72% 0.101 258.9)
XYZ	xyz(19.9129, 20.1527, 48.1786)
Luminance	0.2015 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DB8 #B89257

analogous

#57ADB8 #577DB8 #6157B8

triadic

#577DB8 #B8577D #7DB857

tetradic

#577DB8 #B857AD #B89257 #57B861

square

#577DB8 #B857AD #B89257 #57B861

split-complementary

#577DB8 #B86157 #ADB857

monochromatic

#2C4468 #3E6093 #577DB8 #829ECA #ADC0DC

Accessibility & contrast

On white

4.17

#577DB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#577DB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DB8

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DB8	#FFFFFF	#000000	##000000
##577DB8	1.00	4.17	5.03	5.03
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6681BB

Deuteranopia (green-blind)

#5A78B7

Tritanopia (blue-blind)

#258A92

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577db8;
/* rgb */ color: rgb(87, 125, 184);
/* oklch */ color: oklch(58.7% 0.101 258.9);

Tailwind

colors: {
  custom: {
    50: '#8ca2cd',
    500: '#577db8',
    950: '#000000',
  },
}

SCSS

$custom: #577db8;
$custom-light: #8ca2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#577db8",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 184
  },
  "hsl": {
    "h": 216.495,
    "s": 40.586,
    "l": 53.137
  },
  "oklch": {
    "l": 0.58723,
    "c": 0.10079,
    "h": 258.9
  },
  "luminance": 0.20154
}

Semantic roles & 50–950 ramp

primary

#577DB8

secondary

#CABAA0

accent

#A157D0

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0F13

muted

#7D7E82

Preview Lab

Preview with #577DB8

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

Preview Lab → · Contrast checker → · Palette generator →