#577FC0#577FC0

#577FC0 is a mid, moderate blue. Relative luminance 0.210; OKLCH L 59.6% C 0.110 H 259.7°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#577FC0
RGB	rgb(87, 127, 192)
HSL	hsl(217, 45%, 55%)
HSV	hsv(217, 55%, 75%)
CMYK	cmyk(54.7%, 33.9%, 0%, 24.7%)
CIE-LAB	lab(52.96, 5.18, -38.24)
CIE-LCH	lch(52.96, 38.59, 277.72°)
OKLab	oklab(59.59% -0.0195 -0.1079)
OKLCH	oklch(59.59% 0.11 259.7)
XYZ	xyz(21.0310, 21.0091, 52.8059)
Luminance	0.2101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FC0 #C09857

analogous

#57B4C0 #577FC0 #6457C0

triadic

#577FC0 #C0577F #7FC057

tetradic

#577FC0 #C057B4 #C09857 #57C064

square

#577FC0 #C057B4 #C09857 #57C064

split-complementary

#577FC0 #C06457 #B4C057

monochromatic

#2B4672 #3B619E #577FC0 #84A1D1 #B0C3E1

Accessibility & contrast

On white

4.04

#577FC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#577FC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FC0

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FC0	#FFFFFF	#000000	##000000
##577FC0	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6584C3

Deuteranopia (green-blind)

#587ABF

Tritanopia (blue-blind)

#188D97

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577fc0;
/* rgb */ color: rgb(87, 127, 192);
/* oklch */ color: oklch(59.6% 0.110 259.7);

Tailwind

colors: {
  custom: {
    50: '#8da3d3',
    500: '#577fc0',
    950: '#000000',
  },
}

SCSS

$custom: #577fc0;
$custom-light: #8da3d3;
$custom-dark: #000000;

JSON

{
  "hex": "#577fc0",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 192
  },
  "hsl": {
    "h": 217.143,
    "s": 45.455,
    "l": 54.706
  },
  "oklch": {
    "l": 0.59589,
    "c": 0.10965,
    "h": 259.7
  },
  "luminance": 0.21011
}

Semantic roles & 50–950 ramp

primary

#577FC0

secondary

#D0BFA3

accent

#A353D5

background

#F9FAFD

surface

#F1F3FA

border

#CBCDD3

text

#0D0F14

muted

#7E7F83

Preview Lab

Preview with #577FC0

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

Preview Lab → · Contrast checker → · Palette generator →