#577FDE#577FDE

#577FDE is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.3% C 0.151 H 265.1°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#577FDE
RGB	rgb(87, 127, 222)
HSL	hsl(222, 67%, 61%)
HSV	hsv(222, 61%, 87%)
CMYK	cmyk(60.8%, 42.8%, 0%, 12.9%)
CIE-LAB	lab(54.53, 15.07, -52.74)
CIE-LCH	lch(54.53, 54.85, 285.94°)
OKLab	oklab(61.32% -0.0129 -0.1503)
OKLCH	oklch(61.32% 0.151 265.1)
XYZ	xyz(24.7001, 22.4768, 72.1299)
Luminance	0.2248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FDE #DEB657

analogous

#57C3DE #577FDE #7257DE

triadic

#577FDE #DE577F #7FDE57

tetradic

#577FDE #DE57C3 #DEB657 #57DE72

square

#577FDE #DE57C3 #DEB657 #57DE72

split-complementary

#577FDE #DE7257 #C3DE57

monochromatic

#1F449C #295ACF #577FDE #8AA6E8 #BDCDF2

Accessibility & contrast

On white

3.82

#577FDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#577FDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FDE

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FDE	#FFFFFF	#000000	##000000
##577FDE	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5489E2

Deuteranopia (green-blind)

#407DDC

Tritanopia (blue-blind)

#0094A4

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577fde;
/* rgb */ color: rgb(87, 127, 222);
/* oklch */ color: oklch(61.3% 0.151 265.1);

Tailwind

colors: {
  custom: {
    50: '#92a3e9',
    500: '#577fde',
    950: '#000000',
  },
}

SCSS

$custom: #577fde;
$custom-light: #92a3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#577fde",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 222
  },
  "hsl": {
    "h": 222.222,
    "s": 67.164,
    "l": 60.588
  },
  "oklch": {
    "l": 0.61316,
    "c": 0.15087,
    "h": 265.1
  },
  "luminance": 0.22479
}

Semantic roles & 50–950 ramp

primary

#577FDE

secondary

#E2D3AF

accent

#9816CF

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FDE

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

Preview Lab → · Contrast checker → · Palette generator →