#577CC3#577CC3

#577CC3 is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.1% C 0.117 H 262.5°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#577CC3
RGB	rgb(87, 124, 195)
HSL	hsl(219, 47%, 55%)
HSV	hsv(219, 55%, 76%)
CMYK	cmyk(55.4%, 36.4%, 0%, 23.5%)
CIE-LAB	lab(52.26, 7.96, -41.05)
CIE-LCH	lch(52.26, 41.81, 280.97°)
OKLab	oklab(59.1% -0.0153 -0.1161)
OKLCH	oklch(59.1% 0.117 262.5)
XYZ	xyz(20.9851, 20.3800, 54.4471)
Luminance	0.2038 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CC3 #C39E57

analogous

#57B2C3 #577CC3 #6857C3

triadic

#577CC3 #C3577C #7CC357

tetradic

#577CC3 #C357B2 #C39E57 #57C368

square

#577CC3 #C357B2 #C39E57 #57C368

split-complementary

#577CC3 #C36857 #B2C357

monochromatic

#2A4476 #3A5EA3 #577CC3 #849FD3 #B1C2E3

Accessibility & contrast

On white

4.14

#577CC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#577CC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CC3

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CC3	#FFFFFF	#000000	##000000
##577CC3	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F82C6

Deuteranopia (green-blind)

#5278C1

Tritanopia (blue-blind)

#138C96

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577cc3;
/* rgb */ color: rgb(87, 124, 195);
/* oklch */ color: oklch(59.1% 0.117 262.5);

Tailwind

colors: {
  custom: {
    50: '#8ea1d5',
    500: '#577cc3',
    950: '#000000',
  },
}

SCSS

$custom: #577cc3;
$custom-light: #8ea1d5;
$custom-dark: #000000;

JSON

{
  "hex": "#577cc3",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 195
  },
  "hsl": {
    "h": 219.444,
    "s": 47.368,
    "l": 55.294
  },
  "oklch": {
    "l": 0.59097,
    "c": 0.11711,
    "h": 262.5
  },
  "luminance": 0.20382
}

Semantic roles & 50–950 ramp

primary

#577CC3

secondary

#D1C2A4

accent

#A951D7

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577CC3

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

Preview Lab → · Contrast checker → · Palette generator →