#577AB4#577AB4

#577AB4 is a mid, moderate blue. Relative luminance 0.192; OKLCH L 57.8% C 0.098 H 260.1°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#577AB4
RGB	rgb(87, 122, 180)
HSL	hsl(217, 38%, 52%)
HSV	hsv(217, 52%, 71%)
CMYK	cmyk(51.7%, 32.2%, 0%, 29.4%)
CIE-LAB	lab(50.97, 4.35, -34.48)
CIE-LCH	lch(50.97, 34.75, 277.19°)
OKLab	oklab(57.85% -0.0169 -0.097)
OKLCH	oklch(57.85% 0.098 260.1)
XYZ	xyz(19.1255, 19.2392, 45.8769)
Luminance	0.1924 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AB4 #B49157

analogous

#57A9B4 #577AB4 #6257B4

triadic

#577AB4 #B4577A #7AB457

tetradic

#577AB4 #B457A9 #B49157 #57B462

square

#577AB4 #B457A9 #B49157 #57B462

split-complementary

#577AB4 #B46257 #A9B457

monochromatic

#2D4164 #405D8E #577AB4 #819BC7 #ACBDDA

Accessibility & contrast

On white

4.33

#577AB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#577AB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AB4

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AB4	#FFFFFF	#000000	##000000
##577AB4	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637EB6

Deuteranopia (green-blind)

#5875B3

Tritanopia (blue-blind)

#2A878F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #577ab4;
/* rgb */ color: rgb(87, 122, 180);
/* oklch */ color: oklch(57.8% 0.098 260.1);

Tailwind

colors: {
  custom: {
    50: '#8ca0ca',
    500: '#577ab4',
    950: '#000000',
  },
}

SCSS

$custom: #577ab4;
$custom-light: #8ca0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#577ab4",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 180
  },
  "hsl": {
    "h": 217.419,
    "s": 38.272,
    "l": 52.353
  },
  "oklch": {
    "l": 0.57847,
    "c": 0.09845,
    "h": 260.1
  },
  "luminance": 0.19241
}

Semantic roles & 50–950 ramp

primary

#577AB4

secondary

#C8B89F

accent

#A25ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #577AB4

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

Preview Lab → · Contrast checker → · Palette generator →