#577DB1#577DB1

#577DB1 is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.4% C 0.091 H 256.4°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#577DB1
RGB	rgb(87, 125, 177)
HSL	hsl(215, 37%, 52%)
HSV	hsv(215, 51%, 69%)
CMYK	cmyk(50.8%, 29.4%, 0%, 30.6%)
CIE-LAB	lab(51.69, 1.61, -31.62)
CIE-LCH	lch(51.69, 31.66, 272.92°)
OKLab	oklab(58.36% -0.0214 -0.0887)
OKLCH	oklch(58.36% 0.091 256.4)
XYZ	xyz(19.1972, 19.8664, 44.4094)
Luminance	0.1987 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DB1 #B18B57

analogous

#57AAB1 #577DB1 #5E57B1

triadic

#577DB1 #B1577D #7DB157

tetradic

#577DB1 #B157AA #B18B57 #57B15E

square

#577DB1 #B157AA #B18B57 #57B15E

split-complementary

#577DB1 #B15E57 #AAB157

monochromatic

#2D4361 #40608A #577DB1 #819DC4 #ABBED8

Accessibility & contrast

On white

4.22

#577DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#577DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DB1

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DB1	#FFFFFF	#000000	##000000
##577DB1	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6980B3

Deuteranopia (green-blind)

#5E77B0

Tritanopia (blue-blind)

#2C898F

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #577db1;
/* rgb */ color: rgb(87, 125, 177);
/* oklch */ color: oklch(58.4% 0.091 256.4);

Tailwind

colors: {
  custom: {
    50: '#8ca2c8',
    500: '#577db1',
    950: '#000000',
  },
}

SCSS

$custom: #577db1;
$custom-light: #8ca2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#577db1",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 214.667,
    "s": 36.585,
    "l": 51.765
  },
  "oklch": {
    "l": 0.58364,
    "c": 0.09125,
    "h": 256.4
  },
  "luminance": 0.19868
}

Semantic roles & 50–950 ramp

primary

#577DB1

secondary

#C6B59E

accent

#9D5BCD

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0F13

muted

#7D7E82

Preview Lab

Preview with #577DB1

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

Preview Lab → · Contrast checker → · Palette generator →