#577FB3#577FB3

#577FB3 is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.9% C 0.092 H 255.4°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#577FB3
RGB	rgb(87, 127, 179)
HSL	hsl(214, 38%, 52%)
HSV	hsv(214, 51%, 70%)
CMYK	cmyk(51.4%, 29.1%, 0%, 29.8%)
CIE-LAB	lab(52.35, 1.05, -31.73)
CIE-LCH	lch(52.35, 31.75, 271.90°)
OKLab	oklab(58.91% -0.0232 -0.089)
OKLCH	oklch(58.91% 0.092 255.4)
XYZ	xyz(19.6537, 20.4582, 45.5522)
Luminance	0.2046 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FB3 #B38B57

analogous

#57ADB3 #577FB3 #5D57B3

triadic

#577FB3 #B3577F #7FB357

tetradic

#577FB3 #B357AD #B38B57 #57B35D

square

#577FB3 #B357AD #B38B57 #57B35D

split-complementary

#577FB3 #B35D57 #ADB357

monochromatic

#2D4463 #40618D #577FB3 #819FC6 #ABBFD9

Accessibility & contrast

On white

4.12

#577FB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#577FB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FB3

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FB3	#FFFFFF	#000000	##000000
##577FB3	1.00	4.12	5.09	5.09
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A82B5

Deuteranopia (green-blind)

#5F79B2

Tritanopia (blue-blind)

#2A8B91

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577fb3;
/* rgb */ color: rgb(87, 127, 179);
/* oklch */ color: oklch(58.9% 0.092 255.4);

Tailwind

colors: {
  custom: {
    50: '#8ca3ca',
    500: '#577fb3',
    950: '#000000',
  },
}

SCSS

$custom: #577fb3;
$custom-light: #8ca3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#577fb3",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 179
  },
  "hsl": {
    "h": 213.913,
    "s": 37.705,
    "l": 52.157
  },
  "oklch": {
    "l": 0.58914,
    "c": 0.09201,
    "h": 255.4
  },
  "luminance": 0.2046
}

Semantic roles & 50–950 ramp

primary

#577FB3

secondary

#C7B69F

accent

#9B5ACE

background

#F8FAFC

surface

#F0F3F8

border

#CBCDD1

text

#0C0F13

muted

#7D7F82

Preview Lab

Preview with #577FB3

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

Preview Lab → · Contrast checker → · Palette generator →