#577DB4#577DB4

#577DB4 is a mid, moderate blue. Relative luminance 0.200; OKLCH L 58.5% C 0.095 H 257.6°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#577DB4
RGB	rgb(87, 125, 180)
HSL	hsl(215, 38%, 52%)
HSV	hsv(215, 52%, 71%)
CMYK	cmyk(51.7%, 30.6%, 0%, 29.4%)
CIE-LAB	lab(51.82, 2.55, -33.14)
CIE-LCH	lch(51.82, 33.23, 274.41°)
OKLab	oklab(58.52% -0.0205 -0.0931)
OKLCH	oklch(58.52% 0.095 257.6)
XYZ	xyz(19.4995, 19.9873, 46.0016)
Luminance	0.1999 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DB4 #B48E57

analogous

#57ACB4 #577DB4 #6057B4

triadic

#577DB4 #B4577D #7DB457

tetradic

#577DB4 #B457AC #B48E57 #57B460

square

#577DB4 #B457AC #B48E57 #57B460

split-complementary

#577DB4 #B46057 #ACB457

monochromatic

#2D4364 #40608E #577DB4 #819EC7 #ACBEDA

Accessibility & contrast

On white

4.20

#577DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#577DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DB4

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DB4	#FFFFFF	#000000	##000000
##577DB4	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6780B6

Deuteranopia (green-blind)

#5C78B3

Tritanopia (blue-blind)

#298990

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577db4;
/* rgb */ color: rgb(87, 125, 180);
/* oklch */ color: oklch(58.5% 0.095 257.6);

Tailwind

colors: {
  custom: {
    50: '#8ca2ca',
    500: '#577db4',
    950: '#000000',
  },
}

SCSS

$custom: #577db4;
$custom-light: #8ca2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#577db4",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 180
  },
  "hsl": {
    "h": 215.484,
    "s": 38.272,
    "l": 52.353
  },
  "oklch": {
    "l": 0.58516,
    "c": 0.09532,
    "h": 257.6
  },
  "luminance": 0.19989
}

Semantic roles & 50–950 ramp

primary

#577DB4

secondary

#C8B79F

accent

#9F5ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0F13

muted

#7D7E82

Preview Lab

Preview with #577DB4

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

Preview Lab → · Contrast checker → · Palette generator →