#577AAC#577AAC

#577AAC is a mid, moderate blue. Relative luminance 0.189; OKLCH L 57.4% C 0.087 H 257.3°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#577AAC
RGB	rgb(87, 122, 172)
HSL	hsl(215, 34%, 51%)
HSV	hsv(215, 49%, 67%)
CMYK	cmyk(49.4%, 29.1%, 0%, 32.5%)
CIE-LAB	lab(50.60, 1.84, -30.43)
CIE-LCH	lch(50.60, 30.48, 273.46°)
OKLab	oklab(57.44% -0.0192 -0.0853)
OKLCH	oklch(57.44% 0.087 257.3)
XYZ	xyz(18.3339, 18.9226, 41.7080)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AAC #AC8957

analogous

#57A5AC #577AAC #5E57AC

triadic

#577AAC #AC577A #7AAC57

tetradic

#577AAC #AC57A5 #AC8957 #57AC5E

square

#577AAC #AC57A5 #AC8957 #57AC5E

split-complementary

#577AAC #AC5E57 #A5AC57

monochromatic

#2D405B #415D84 #577AAC #809AC0 #A9BBD4

Accessibility & contrast

On white

4.39

#577AAC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#577AAC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AAC

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AAC	#FFFFFF	#000000	##000000
##577AAC	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677DAE

Deuteranopia (green-blind)

#5D75AB

Tritanopia (blue-blind)

#31858C

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #577aac;
/* rgb */ color: rgb(87, 122, 172);
/* oklch */ color: oklch(57.4% 0.087 257.3);

Tailwind

colors: {
  custom: {
    50: '#8ba0c5',
    500: '#577aac',
    950: '#000000',
  },
}

SCSS

$custom: #577aac;
$custom-light: #8ba0c5;
$custom-dark: #000000;

JSON

{
  "hex": "#577aac",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 172
  },
  "hsl": {
    "h": 215.294,
    "s": 33.865,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57437,
    "c": 0.0874,
    "h": 257.3
  },
  "luminance": 0.18924
}

Semantic roles & 50–950 ramp

primary

#577AAC

secondary

#C2B39D

accent

#9D5ECA

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #577AAC

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

Preview Lab → · Contrast checker → · Palette generator →