#577BAF#577BAF

#577BAF is a mid, moderate blue. Relative luminance 0.193; OKLCH L 57.8% C 0.091 H 257.5°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#577BAF
RGB	rgb(87, 123, 175)
HSL	hsl(215, 35%, 51%)
HSV	hsv(215, 50%, 69%)
CMYK	cmyk(50.3%, 29.7%, 0%, 31.4%)
CIE-LAB	lab(51.02, 2.18, -31.50)
CIE-LCH	lch(51.02, 31.58, 273.96°)
OKLab	oklab(57.81% -0.0195 -0.0884)
OKLCH	oklch(57.81% 0.091 257.5)
XYZ	xyz(18.7487, 19.2860, 43.2837)
Luminance	0.1929 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BAF #AF8B57

analogous

#57A7AF #577BAF #5F57AF

triadic

#577BAF #AF577B #7BAF57

tetradic

#577BAF #AF57A7 #AF8B57 #57AF5F

square

#577BAF #AF57A7 #AF8B57 #57AF5F

split-complementary

#577BAF #AF5F57 #A7AF57

monochromatic

#2D415F #415E88 #577BAF #809CC3 #AABCD6

Accessibility & contrast

On white

4.32

#577BAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#577BAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BAF

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BAF	#FFFFFF	#000000	##000000
##577BAF	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677EB1

Deuteranopia (green-blind)

#5C76AE

Tritanopia (blue-blind)

#2E868D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #577baf;
/* rgb */ color: rgb(87, 123, 175);
/* oklch */ color: oklch(57.8% 0.091 257.5);

Tailwind

colors: {
  custom: {
    50: '#8ba1c7',
    500: '#577baf',
    950: '#000000',
  },
}

SCSS

$custom: #577baf;
$custom-light: #8ba1c7;
$custom-dark: #000000;

JSON

{
  "hex": "#577baf",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 175
  },
  "hsl": {
    "h": 215.455,
    "s": 35.484,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57813,
    "c": 0.09051,
    "h": 257.5
  },
  "luminance": 0.19287
}

Semantic roles & 50–950 ramp

primary

#577BAF

secondary

#C4B49E

accent

#9E5CCC

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #577BAF

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

Preview Lab → · Contrast checker → · Palette generator →