#577EBA#577EBA

#577EBA is a mid, moderate blue. Relative luminance 0.205; OKLCH L 59.1% C 0.102 H 258.8°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#577EBA
RGB	rgb(87, 126, 186)
HSL	hsl(216, 42%, 54%)
HSV	hsv(216, 53%, 73%)
CMYK	cmyk(53.2%, 32.3%, 0%, 27.1%)
CIE-LAB	lab(52.39, 3.86, -35.70)
CIE-LCH	lch(52.39, 35.91, 276.17°)
OKLab	oklab(59.05% -0.02 -0.1005)
OKLCH	oklch(59.05% 0.102 258.8)
XYZ	xyz(20.2512, 20.4916, 49.3330)
Luminance	0.2049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EBA #BA9357

analogous

#57AFBA #577EBA #6157BA

triadic

#577EBA #BA577E #7EBA57

tetradic

#577EBA #BA57AF #BA9357 #57BA61

square

#577EBA #BA57AF #BA9357 #57BA61

split-complementary

#577EBA #BA6157 #AFBA57

monochromatic

#2C456B #3E6196 #577EBA #829FCC #AEC1DE

Accessibility & contrast

On white

4.12

#577EBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#577EBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EBA

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EBA	#FFFFFF	#000000	##000000
##577EBA	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6682BD

Deuteranopia (green-blind)

#5A79B9

Tritanopia (blue-blind)

#228B93

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577eba;
/* rgb */ color: rgb(87, 126, 186);
/* oklch */ color: oklch(59.1% 0.102 258.8);

Tailwind

colors: {
  custom: {
    50: '#8da3cf',
    500: '#577eba',
    950: '#000000',
  },
}

SCSS

$custom: #577eba;
$custom-light: #8da3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#577eba",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 186
  },
  "hsl": {
    "h": 216.364,
    "s": 41.772,
    "l": 53.529
  },
  "oklch": {
    "l": 0.5905,
    "c": 0.10249,
    "h": 258.8
  },
  "luminance": 0.20493
}

Semantic roles & 50–950 ramp

primary

#577EBA

secondary

#CCBBA1

accent

#A156D2

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0D0F14

muted

#7D7F82

Preview Lab

Preview with #577EBA

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

Preview Lab → · Contrast checker → · Palette generator →