#577CC0#577CC0

#577CC0 is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.9% C 0.113 H 261.8°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#577CC0
RGB	rgb(87, 124, 192)
HSL	hsl(219, 45%, 55%)
HSV	hsv(219, 55%, 75%)
CMYK	cmyk(54.7%, 35.4%, 0%, 24.7%)
CIE-LAB	lab(52.11, 6.98, -39.57)
CIE-LCH	lch(52.11, 40.18, 280.01°)
OKLab	oklab(58.93% -0.0161 -0.1118)
OKLCH	oklch(58.93% 0.113 261.8)
XYZ	xyz(20.6493, 20.2457, 52.6786)
Luminance	0.2025 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CC0 #C09B57

analogous

#57B1C0 #577CC0 #6657C0

triadic

#577CC0 #C0577C #7CC057

tetradic

#577CC0 #C057B1 #C09B57 #57C066

square

#577CC0 #C057B1 #C09B57 #57C066

split-complementary

#577CC0 #C06657 #B1C057

monochromatic

#2B4472 #3B5E9E #577CC0 #849FD1 #B0C1E1

Accessibility & contrast

On white

4.16

#577CC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#577CC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CC0

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CC0	#FFFFFF	#000000	##000000
##577CC0	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6182C3

Deuteranopia (green-blind)

#5478BF

Tritanopia (blue-blind)

#198B95

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577cc0;
/* rgb */ color: rgb(87, 124, 192);
/* oklch */ color: oklch(58.9% 0.113 261.8);

Tailwind

colors: {
  custom: {
    50: '#8da1d3',
    500: '#577cc0',
    950: '#000000',
  },
}

SCSS

$custom: #577cc0;
$custom-light: #8da1d3;
$custom-dark: #000000;

JSON

{
  "hex": "#577cc0",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 192
  },
  "hsl": {
    "h": 218.857,
    "s": 45.455,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58931,
    "c": 0.11294,
    "h": 261.8
  },
  "luminance": 0.20247
}

Semantic roles & 50–950 ramp

primary

#577CC0

secondary

#D0C0A3

accent

#A753D5

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577CC0

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

Preview Lab → · Contrast checker → · Palette generator →