#577AAF#577AAF

#577AAF is a mid, moderate blue. Relative luminance 0.190; OKLCH L 57.6% C 0.092 H 258.5°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#577AAF
RGB	rgb(87, 122, 175)
HSL	hsl(216, 35%, 51%)
HSV	hsv(216, 50%, 69%)
CMYK	cmyk(50.3%, 30.3%, 0%, 31.4%)
CIE-LAB	lab(50.73, 2.78, -31.95)
CIE-LCH	lch(50.73, 32.07, 274.97°)
OKLab	oklab(57.59% -0.0183 -0.0897)
OKLCH	oklch(57.59% 0.092 258.5)
XYZ	xyz(18.6253, 19.0391, 43.2426)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AAF #AF8C57

analogous

#57A6AF #577AAF #6057AF

triadic

#577AAF #AF577A #7AAF57

tetradic

#577AAF #AF57A6 #AF8C57 #57AF60

square

#577AAF #AF57A6 #AF8C57 #57AF60

split-complementary

#577AAF #AF6057 #A6AF57

monochromatic

#2D415F #415D88 #577AAF #809BC3 #AABCD6

Accessibility & contrast

On white

4.37

#577AAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#577AAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AAF

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AAF	#FFFFFF	#000000	##000000
##577AAF	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667DB1

Deuteranopia (green-blind)

#5B75AE

Tritanopia (blue-blind)

#2F868D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #577aaf;
/* rgb */ color: rgb(87, 122, 175);
/* oklch */ color: oklch(57.6% 0.092 258.5);

Tailwind

colors: {
  custom: {
    50: '#8ba0c7',
    500: '#577aaf',
    950: '#000000',
  },
}

SCSS

$custom: #577aaf;
$custom-light: #8ba0c7;
$custom-dark: #000000;

JSON

{
  "hex": "#577aaf",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 175
  },
  "hsl": {
    "h": 216.136,
    "s": 35.484,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57589,
    "c": 0.09153,
    "h": 258.5
  },
  "luminance": 0.1904
}

Semantic roles & 50–950 ramp

primary

#577AAF

secondary

#C4B59E

accent

#9F5CCC

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #577AAF

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

Preview Lab → · Contrast checker → · Palette generator →