#1C577C#1C577C

#1C577C is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.7% C 0.085 H 240.6°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#1C577C
RGB	rgb(28, 87, 124)
HSL	hsl(203, 63%, 30%)
HSV	hsv(203, 77%, 49%)
CMYK	cmyk(77.4%, 29.8%, 0%, 51.4%)
CIE-LAB	lab(35.04, -5.31, -26.28)
CIE-LCH	lch(35.04, 26.81, 258.58°)
OKLab	oklab(43.73% -0.0418 -0.0743)
OKLCH	oklch(43.73% 0.085 240.6)
XYZ	xyz(7.5238, 8.5176, 20.3124)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C577C #7C411C

analogous

#1C7C71 #1C577C #1C277C

triadic

#1C577C #7C1C57 #577C1C

tetradic

#1C577C #711C7C #7C411C #277C1C

square

#1C577C #711C7C #7C411C #277C1C

split-complementary

#1C577C #7C1C27 #7C711C

monochromatic

#061219 #11344A #1C577C #277AAE #3F9AD4

Accessibility & contrast

On white

7.77

#1C577C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1C577C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C577C

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C577C	#FFFFFF	#000000	##FFFFFF
##1C577C	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46577E

Deuteranopia (green-blind)

#394E7B

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1c577c;
/* rgb */ color: rgb(28, 87, 124);
/* oklch */ color: oklch(43.7% 0.085 240.6);

Tailwind

colors: {
  custom: {
    50: '#6786a2',
    500: '#1c577c',
    950: '#000000',
  },
}

SCSS

$custom: #1c577c;
$custom-light: #6786a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c577c",
  "rgb": {
    "r": 28,
    "g": 87,
    "b": 124
  },
  "hsl": {
    "h": 203.125,
    "s": 63.158,
    "l": 29.804
  },
  "oklch": {
    "l": 0.43729,
    "c": 0.08526,
    "h": 240.6
  },
  "luminance": 0.08519
}

Semantic roles & 50–950 ramp

primary

#1C577C

secondary

#B06E44

accent

#8142E6

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1C577C

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

Preview Lab → · Contrast checker → · Palette generator →