#577FBE#577FBE

#577FBE is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.5% C 0.107 H 259.2°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#577FBE
RGB	rgb(87, 127, 190)
HSL	hsl(217, 44%, 54%)
HSV	hsv(217, 54%, 75%)
CMYK	cmyk(54.2%, 33.2%, 0%, 25.5%)
CIE-LAB	lab(52.86, 4.54, -37.25)
CIE-LCH	lch(52.86, 37.52, 276.95°)
OKLab	oklab(59.48% -0.0201 -0.105)
OKLCH	oklch(59.48% 0.107 259.2)
XYZ	xyz(20.8109, 20.9211, 51.6467)
Luminance	0.2092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FBE #BE9657

analogous

#57B3BE #577FBE #6357BE

triadic

#577FBE #BE577F #7FBE57

tetradic

#577FBE #BE57B3 #BE9657 #57BE63

square

#577FBE #BE57B3 #BE9657 #57BE63

split-complementary

#577FBE #BE6357 #B3BE57

monochromatic

#2B466F #3C619C #577FBE #83A1CF #AFC2E0

Accessibility & contrast

On white

4.05

#577FBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#577FBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FBE

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FBE	#FFFFFF	#000000	##000000
##577FBE	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6684C1

Deuteranopia (green-blind)

#597ABD

Tritanopia (blue-blind)

#1C8D96

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577fbe;
/* rgb */ color: rgb(87, 127, 190);
/* oklch */ color: oklch(59.5% 0.107 259.2);

Tailwind

colors: {
  custom: {
    50: '#8da3d2',
    500: '#577fbe',
    950: '#000000',
  },
}

SCSS

$custom: #577fbe;
$custom-light: #8da3d2;
$custom-dark: #000000;

JSON

{
  "hex": "#577fbe",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 190
  },
  "hsl": {
    "h": 216.699,
    "s": 44.206,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59482,
    "c": 0.1069,
    "h": 259.2
  },
  "luminance": 0.20923
}

Semantic roles & 50–950 ramp

primary

#577FBE

secondary

#CEBDA3

accent

#A254D4

background

#F9FAFC

surface

#F1F3F9

border

#CBCDD2

text

#0D0F14

muted

#7E7F82

Preview Lab

Preview with #577FBE

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

Preview Lab → · Contrast checker → · Palette generator →