#577AAD#577AAD

#577AAD is a mid, moderate blue. Relative luminance 0.190; OKLCH L 57.5% C 0.089 H 257.7°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#577AAD
RGB	rgb(87, 122, 173)
HSL	hsl(216, 34%, 51%)
HSV	hsv(216, 50%, 68%)
CMYK	cmyk(49.7%, 29.5%, 0%, 32.2%)
CIE-LAB	lab(50.64, 2.15, -30.94)
CIE-LCH	lch(50.64, 31.01, 273.98°)
OKLab	oklab(57.49% -0.0189 -0.0867)
OKLCH	oklch(57.49% 0.089 257.7)
XYZ	xyz(18.4303, 18.9612, 42.2157)
Luminance	0.1896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AAD #AD8A57

analogous

#57A5AD #577AAD #5F57AD

triadic

#577AAD #AD577A #7AAD57

tetradic

#577AAD #AD57A5 #AD8A57 #57AD5F

square

#577AAD #AD57A5 #AD8A57 #57AD5F

split-complementary

#577AAD #AD5F57 #A5AD57

monochromatic

#2D405C #415D86 #577AAD #809BC1 #A9BBD5

Accessibility & contrast

On white

4.38

#577AAD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#577AAD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AAD

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AAD	#FFFFFF	#000000	##000000
##577AAD	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667DAF

Deuteranopia (green-blind)

#5C75AC

Tritanopia (blue-blind)

#30858C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #577aad;
/* rgb */ color: rgb(87, 122, 173);
/* oklch */ color: oklch(57.5% 0.089 257.7);

Tailwind

colors: {
  custom: {
    50: '#8ba0c5',
    500: '#577aad',
    950: '#000000',
  },
}

SCSS

$custom: #577aad;
$custom-light: #8ba0c5;
$custom-dark: #000000;

JSON

{
  "hex": "#577aad",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 173
  },
  "hsl": {
    "h": 215.581,
    "s": 34.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.57487,
    "c": 0.08878,
    "h": 257.7
  },
  "luminance": 0.18962
}

Semantic roles & 50–950 ramp

primary

#577AAD

secondary

#C3B39D

accent

#9E5DCA

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #577AAD

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

Preview Lab → · Contrast checker → · Palette generator →