#577DBE#577DBE

#577DBE is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.0% C 0.109 H 260.6°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#577DBE
RGB	rgb(87, 125, 190)
HSL	hsl(218, 44%, 54%)
HSV	hsv(218, 54%, 75%)
CMYK	cmyk(54.2%, 34.2%, 0%, 25.5%)
CIE-LAB	lab(52.30, 5.74, -38.14)
CIE-LCH	lch(52.30, 38.57, 278.56°)
OKLab	oklab(59.04% -0.0177 -0.1076)
OKLCH	oklch(59.04% 0.109 260.6)
XYZ	xyz(20.5552, 20.4096, 51.5615)
Luminance	0.2041 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DBE #BE9857

analogous

#57B1BE #577DBE #6557BE

triadic

#577DBE #BE577D #7DBE57

tetradic

#577DBE #BE57B1 #BE9857 #57BE65

square

#577DBE #BE57B1 #BE9857 #57BE65

split-complementary

#577DBE #BE6557 #B1BE57

monochromatic

#2B446F #3C5F9C #577DBE #839FCF #AFC1E0

Accessibility & contrast

On white

4.13

#577DBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#577DBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DBE

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DBE	#FFFFFF	#000000	##000000
##577DBE	1.00	4.13	5.08	5.08
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6382C1

Deuteranopia (green-blind)

#5678BD

Tritanopia (blue-blind)

#1C8B95

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577dbe;
/* rgb */ color: rgb(87, 125, 190);
/* oklch */ color: oklch(59.0% 0.109 260.6);

Tailwind

colors: {
  custom: {
    50: '#8da2d2',
    500: '#577dbe',
    950: '#000000',
  },
}

SCSS

$custom: #577dbe;
$custom-light: #8da2d2;
$custom-dark: #000000;

JSON

{
  "hex": "#577dbe",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 190
  },
  "hsl": {
    "h": 217.864,
    "s": 44.206,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59042,
    "c": 0.10906,
    "h": 260.6
  },
  "luminance": 0.20411
}

Semantic roles & 50–950 ramp

primary

#577DBE

secondary

#CEBEA3

accent

#A554D4

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0F14

muted

#7E7E82

Preview Lab

Preview with #577DBE

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

Preview Lab → · Contrast checker → · Palette generator →