#577CBE#577CBE

#577CBE is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.8% C 0.110 H 261.3°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#577CBE
RGB	rgb(87, 124, 190)
HSL	hsl(218, 44%, 54%)
HSV	hsv(218, 54%, 75%)
CMYK	cmyk(54.2%, 34.7%, 0%, 25.5%)
CIE-LAB	lab(52.02, 6.34, -38.58)
CIE-LCH	lch(52.02, 39.10, 279.33°)
OKLab	oklab(58.82% -0.0166 -0.1089)
OKLCH	oklch(58.82% 0.11 261.3)
XYZ	xyz(20.4292, 20.1577, 51.5195)
Luminance	0.2016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CBE #BE9957

analogous

#57AFBE #577CBE #6657BE

triadic

#577CBE #BE577C #7CBE57

tetradic

#577CBE #BE57AF #BE9957 #57BE66

square

#577CBE #BE57AF #BE9957 #57BE66

split-complementary

#577CBE #BE6657 #AFBE57

monochromatic

#2B446F #3C5E9C #577CBE #839ECF #AFC1E0

Accessibility & contrast

On white

4.17

#577CBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#577CBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CBE

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CBE	#FFFFFF	#000000	##000000
##577CBE	1.00	4.17	5.03	5.03
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6281C1

Deuteranopia (green-blind)

#5578BD

Tritanopia (blue-blind)

#1D8A94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577cbe;
/* rgb */ color: rgb(87, 124, 190);
/* oklch */ color: oklch(58.8% 0.110 261.3);

Tailwind

colors: {
  custom: {
    50: '#8da1d2',
    500: '#577cbe',
    950: '#000000',
  },
}

SCSS

$custom: #577cbe;
$custom-light: #8da1d2;
$custom-dark: #000000;

JSON

{
  "hex": "#577cbe",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 190
  },
  "hsl": {
    "h": 218.447,
    "s": 44.206,
    "l": 54.314
  },
  "oklch": {
    "l": 0.58822,
    "c": 0.11016,
    "h": 261.3
  },
  "luminance": 0.20159
}

Semantic roles & 50–950 ramp

primary

#577CBE

secondary

#CEBFA3

accent

#A654D4

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #577CBE

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

Preview Lab → · Contrast checker → · Palette generator →