#577EC3#577EC3

#577EC3 is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.5% C 0.115 H 261.2°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#577EC3
RGB	rgb(87, 126, 195)
HSL	hsl(218, 47%, 55%)
HSV	hsv(218, 55%, 76%)
CMYK	cmyk(55.4%, 35.4%, 0%, 23.5%)
CIE-LAB	lab(52.82, 6.75, -40.16)
CIE-LCH	lch(52.82, 40.73, 279.54°)
OKLab	oklab(59.53% -0.0176 -0.1135)
OKLCH	oklch(59.53% 0.115 261.2)
XYZ	xyz(21.2383, 20.8864, 54.5315)
Luminance	0.2089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EC3 #C39C57

analogous

#57B4C3 #577EC3 #6657C3

triadic

#577EC3 #C3577E #7EC357

tetradic

#577EC3 #C357B4 #C39C57 #57C366

square

#577EC3 #C357B4 #C39C57 #57C366

split-complementary

#577EC3 #C36657 #B4C357

monochromatic

#2A4576 #3A60A3 #577EC3 #84A1D3 #B1C3E3

Accessibility & contrast

On white

4.06

#577EC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#577EC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EC3

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EC3	#FFFFFF	#000000	##000000
##577EC3	1.00	4.06	5.18	5.18
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6284C6

Deuteranopia (green-blind)

#5579C2

Tritanopia (blue-blind)

#128D97

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ec3;
/* rgb */ color: rgb(87, 126, 195);
/* oklch */ color: oklch(59.5% 0.115 261.2);

Tailwind

colors: {
  custom: {
    50: '#8ea3d5',
    500: '#577ec3',
    950: '#000000',
  },
}

SCSS

$custom: #577ec3;
$custom-light: #8ea3d5;
$custom-dark: #000000;

JSON

{
  "hex": "#577ec3",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 195
  },
  "hsl": {
    "h": 218.333,
    "s": 47.368,
    "l": 55.294
  },
  "oklch": {
    "l": 0.59533,
    "c": 0.11486,
    "h": 261.2
  },
  "luminance": 0.20888
}

Semantic roles & 50–950 ramp

primary

#577EC3

secondary

#D1C1A4

accent

#A751D7

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F14

muted

#7E7E83

Preview Lab

Preview with #577EC3

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

Preview Lab → · Contrast checker → · Palette generator →