#577FBD#577FBD

#577FBD is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.4% C 0.106 H 258.9°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#577FBD
RGB	rgb(87, 127, 189)
HSL	hsl(216, 44%, 54%)
HSV	hsv(216, 54%, 74%)
CMYK	cmyk(54%, 32.8%, 0%, 25.9%)
CIE-LAB	lab(52.82, 4.22, -36.75)
CIE-LCH	lch(52.82, 36.99, 276.55°)
OKLab	oklab(59.43% -0.0203 -0.1036)
OKLCH	oklch(59.43% 0.106 258.9)
XYZ	xyz(20.7020, 20.8775, 51.0731)
Luminance	0.2088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FBD #BD9557

analogous

#57B2BD #577FBD #6257BD

triadic

#577FBD #BD577F #7FBD57

tetradic

#577FBD #BD57B2 #BD9557 #57BD62

square

#577FBD #BD57B2 #BD9557 #57BD62

split-complementary

#577FBD #BD6257 #B2BD57

monochromatic

#2B466E #3D619A #577FBD #83A0CE #AFC2E0

Accessibility & contrast

On white

4.06

#577FBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#577FBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FBD

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FBD	#FFFFFF	#000000	##000000
##577FBD	1.00	4.06	5.18	5.18
#FFFFFF	4.06	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)

#6683C0

Deuteranopia (green-blind)

#5A7ABC

Tritanopia (blue-blind)

#1D8D95

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577fbd;
/* rgb */ color: rgb(87, 127, 189);
/* oklch */ color: oklch(59.4% 0.106 258.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#577fbd",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 189
  },
  "hsl": {
    "h": 216.471,
    "s": 43.59,
    "l": 54.118
  },
  "oklch": {
    "l": 0.59429,
    "c": 0.10554,
    "h": 258.9
  },
  "luminance": 0.20879
}

Semantic roles & 50–950 ramp

primary

#577FBD

secondary

#CEBDA2

accent

#A254D3

background

#F9FAFC

surface

#F1F3F9

border

#CBCDD2

text

#0D0F14

muted

#7E7F82

Preview Lab

Preview with #577FBD

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

Preview Lab → · Contrast checker → · Palette generator →