#577EDF#577EDF

#577EDF is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.2% C 0.153 H 265.6°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#577EDF
RGB	rgb(87, 126, 223)
HSL	hsl(223, 68%, 61%)
HSV	hsv(223, 61%, 87%)
CMYK	cmyk(61%, 43.5%, 0%, 12.5%)
CIE-LAB	lab(54.32, 16.01, -53.65)
CIE-LCH	lch(54.32, 55.99, 286.62°)
OKLab	oklab(61.17% -0.0117 -0.153)
OKLCH	oklch(61.17% 0.153 265.6)
XYZ	xyz(24.7060, 22.2735, 72.7950)
Luminance	0.2228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EDF #DFB857

analogous

#57C2DF #577EDF #7457DF

triadic

#577EDF #DF577E #7EDF57

tetradic

#577EDF #DF57C2 #DFB857 #57DF74

square

#577EDF #DF57C2 #DFB857 #57DF74

split-complementary

#577EDF #DF7457 #C2DF57

monochromatic

#1E439E #2858D1 #577EDF #8AA5E9 #BECDF3

Accessibility & contrast

On white

3.85

#577EDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#577EDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EDF

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EDF	#FFFFFF	#000000	##000000
##577EDF	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5188E3

Deuteranopia (green-blind)

#3D7CDD

Tritanopia (blue-blind)

#0094A4

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577edf;
/* rgb */ color: rgb(87, 126, 223);
/* oklch */ color: oklch(61.2% 0.153 265.6);

Tailwind

colors: {
  custom: {
    50: '#92a2e9',
    500: '#577edf',
    950: '#000000',
  },
}

SCSS

$custom: #577edf;
$custom-light: #92a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#577edf",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 223
  },
  "hsl": {
    "h": 222.794,
    "s": 68,
    "l": 60.784
  },
  "oklch": {
    "l": 0.6117,
    "c": 0.15342,
    "h": 265.6
  },
  "luminance": 0.22276
}

Semantic roles & 50–950 ramp

primary

#577EDF

secondary

#E3D4AF

accent

#9A16D0

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #577EDF

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

Preview Lab → · Contrast checker → · Palette generator →