#1C577F#1C577F

#1C577F is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.9% C 0.089 H 242.7°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#1C577F
RGB	rgb(28, 87, 127)
HSL	hsl(204, 64%, 30%)
HSV	hsv(204, 78%, 50%)
CMYK	cmyk(78%, 31.5%, 0%, 50.2%)
CIE-LAB	lab(35.19, -4.15, -27.89)
CIE-LCH	lch(35.19, 28.20, 261.53°)
OKLab	oklab(43.9% -0.0408 -0.079)
OKLCH	oklch(43.9% 0.089 242.7)
XYZ	xyz(7.7164, 8.5947, 21.3268)
Luminance	0.0860 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C577F #7F441C

analogous

#1C7F75 #1C577F #1C267F

triadic

#1C577F #7F1C57 #577F1C

tetradic

#1C577F #751C7F #7F441C #267F1C

square

#1C577F #751C7F #7F441C #267F1C

split-complementary

#1C577F #7F1C26 #7F751C

monochromatic

#06121B #11354D #1C577F #2779B1 #4099D5

Accessibility & contrast

On white

7.72

#1C577F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1C577F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C577F

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C577F	#FFFFFF	#000000	##FFFFFF
##1C577F	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445881

Deuteranopia (green-blind)

#374F7E

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1c577f;
/* rgb */ color: rgb(28, 87, 127);
/* oklch */ color: oklch(43.9% 0.089 242.7);

Tailwind

colors: {
  custom: {
    50: '#6886a4',
    500: '#1c577f',
    950: '#000000',
  },
}

SCSS

$custom: #1c577f;
$custom-light: #6886a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c577f",
  "rgb": {
    "r": 28,
    "g": 87,
    "b": 127
  },
  "hsl": {
    "h": 204.242,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.43901,
    "c": 0.08889,
    "h": 242.7
  },
  "luminance": 0.08596
}

Semantic roles & 50–950 ramp

primary

#1C577F

secondary

#B37144

accent

#8441E7

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1C577F

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

Preview Lab → · Contrast checker → · Palette generator →