#577EBD#577EBD

#577EBD is a mid, moderate blue. Relative luminance 0.206; OKLCH L 59.2% C 0.107 H 259.6°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#577EBD
RGB	rgb(87, 126, 189)
HSL	hsl(217, 44%, 54%)
HSV	hsv(217, 54%, 74%)
CMYK	cmyk(54%, 33.3%, 0%, 25.9%)
CIE-LAB	lab(52.53, 4.82, -37.19)
CIE-LCH	lch(52.53, 37.51, 277.38°)
OKLab	oklab(59.21% -0.0192 -0.1049)
OKLCH	oklch(59.21% 0.107 259.6)
XYZ	xyz(20.5735, 20.6205, 51.0303)
Luminance	0.2062 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EBD #BD9657

analogous

#57B1BD #577EBD #6357BD

triadic

#577EBD #BD577E #7EBD57

tetradic

#577EBD #BD57B1 #BD9657 #57BD63

square

#577EBD #BD57B1 #BD9657 #57BD63

split-complementary

#577EBD #BD6357 #B1BD57

monochromatic

#2B456E #3D609A #577EBD #83A0CE #AFC1E0

Accessibility & contrast

On white

4.10

#577EBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#577EBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EBD

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EBD	#FFFFFF	#000000	##000000
##577EBD	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6583C0

Deuteranopia (green-blind)

#5879BC

Tritanopia (blue-blind)

#1E8C95

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577ebd;
/* rgb */ color: rgb(87, 126, 189);
/* oklch */ color: oklch(59.2% 0.107 259.6);

Tailwind

colors: {
  custom: {
    50: '#8da3d1',
    500: '#577ebd',
    950: '#000000',
  },
}

SCSS

$custom: #577ebd;
$custom-light: #8da3d1;
$custom-dark: #000000;

JSON

{
  "hex": "#577ebd",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 189
  },
  "hsl": {
    "h": 217.059,
    "s": 43.59,
    "l": 54.118
  },
  "oklch": {
    "l": 0.59208,
    "c": 0.1066,
    "h": 259.6
  },
  "luminance": 0.20622
}

Semantic roles & 50–950 ramp

primary

#577EBD

secondary

#CEBDA2

accent

#A354D3

background

#F9FAFC

surface

#F1F3F9

border

#CBCDD2

text

#0D0F14

muted

#7E7F82

Preview Lab

Preview with #577EBD

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

Preview Lab → · Contrast checker → · Palette generator →