#577FB1#577FB1

#577FB1 is a mid, moderate cyan. Relative luminance 0.204; OKLCH L 58.8% C 0.089 H 254.5°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#577FB1
RGB	rgb(87, 127, 177)
HSL	hsl(213, 37%, 52%)
HSV	hsv(213, 51%, 69%)
CMYK	cmyk(50.8%, 28.2%, 0%, 30.6%)
CIE-LAB	lab(52.26, 0.43, -30.72)
CIE-LCH	lch(52.26, 30.73, 270.80°)
OKLab	oklab(58.82% -0.0238 -0.0861)
OKLCH	oklch(58.82% 0.089 254.5)
XYZ	xyz(19.4529, 20.3779, 44.4947)
Luminance	0.2038 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FB1 #B18957

analogous

#57ACB1 #577FB1 #5C57B1

triadic

#577FB1 #B1577F #7FB157

tetradic

#577FB1 #B157AC #B18957 #57B15C

square

#577FB1 #B157AC #B18957 #57B15C

split-complementary

#577FB1 #B15C57 #ACB157

monochromatic

#2D4461 #40618A #577FB1 #819FC4 #ABBFD8

Accessibility & contrast

On white

4.14

#577FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#577FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FB1

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FB1	#FFFFFF	#000000	##000000
##577FB1	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B82B3

Deuteranopia (green-blind)

#6079B0

Tritanopia (blue-blind)

#2C8A90

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577fb1;
/* rgb */ color: rgb(87, 127, 177);
/* oklch */ color: oklch(58.8% 0.089 254.5);

Tailwind

colors: {
  custom: {
    50: '#8ca3c8',
    500: '#577fb1',
    950: '#000000',
  },
}

SCSS

$custom: #577fb1;
$custom-light: #8ca3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#577fb1",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 177
  },
  "hsl": {
    "h": 213.333,
    "s": 36.585,
    "l": 51.765
  },
  "oklch": {
    "l": 0.58815,
    "c": 0.08933,
    "h": 254.5
  },
  "luminance": 0.20379
}

Semantic roles & 50–950 ramp

primary

#577FB1

secondary

#C6B49E

accent

#9A5BCD

background

#F8FAFC

surface

#F0F3F8

border

#CBCDD1

text

#0C0F13

muted

#7D7F82

Preview Lab

Preview with #577FB1

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

Preview Lab → · Contrast checker → · Palette generator →