#577EB6#577EB6

#577EB6 is a mid, moderate blue. Relative luminance 0.203; OKLCH L 58.8% C 0.097 H 257.4°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#577EB6
RGB	rgb(87, 126, 182)
HSL	hsl(215, 39%, 53%)
HSV	hsv(215, 52%, 71%)
CMYK	cmyk(52.2%, 30.8%, 0%, 28.6%)
CIE-LAB	lab(52.20, 2.59, -33.70)
CIE-LCH	lch(52.20, 33.79, 274.39°)
OKLab	oklab(58.84% -0.0211 -0.0947)
OKLCH	oklch(58.84% 0.097 257.4)
XYZ	xyz(19.8319, 20.3239, 47.1247)
Luminance	0.2032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EB6 #B68F57

analogous

#57AEB6 #577EB6 #5F57B6

triadic

#577EB6 #B6577E #7EB657

tetradic

#577EB6 #B657AE #B68F57 #57B65F

square

#577EB6 #B657AE #B68F57 #57B65F

split-complementary

#577EB6 #B65F57 #AEB657

monochromatic

#2C4466 #3F6191 #577EB6 #829FC9 #ACC0DB

Accessibility & contrast

On white

4.15

#577EB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#577EB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EB6

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EB6	#FFFFFF	#000000	##000000
##577EB6	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6881B8

Deuteranopia (green-blind)

#5C78B5

Tritanopia (blue-blind)

#278A92

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577eb6;
/* rgb */ color: rgb(87, 126, 182);
/* oklch */ color: oklch(58.8% 0.097 257.4);

Tailwind

colors: {
  custom: {
    50: '#8ca3cc',
    500: '#577eb6',
    950: '#000000',
  },
}

SCSS

$custom: #577eb6;
$custom-light: #8ca3cc;
$custom-dark: #000000;

JSON

{
  "hex": "#577eb6",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 182
  },
  "hsl": {
    "h": 215.368,
    "s": 39.419,
    "l": 52.745
  },
  "oklch": {
    "l": 0.58842,
    "c": 0.09703,
    "h": 257.4
  },
  "luminance": 0.20325
}

Semantic roles & 50–950 ramp

primary

#577EB6

secondary

#C9B8A0

accent

#9F58CF

background

#F8FAFC

surface

#F0F3F8

border

#CBCDD1

text

#0D0F13

muted

#7D7F82

Preview Lab

Preview with #577EB6

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

Preview Lab → · Contrast checker → · Palette generator →