#1C577D#1C577D

#1C577D is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.8% C 0.086 H 241.3°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#1C577D
RGB	rgb(28, 87, 125)
HSL	hsl(204, 63%, 30%)
HSV	hsv(204, 78%, 49%)
CMYK	cmyk(77.6%, 30.4%, 0%, 51%)
CIE-LAB	lab(35.09, -4.92, -26.82)
CIE-LCH	lch(35.09, 27.27, 259.59°)
OKLab	oklab(43.79% -0.0415 -0.0759)
OKLCH	oklch(43.79% 0.086 241.3)
XYZ	xyz(7.5873, 8.5431, 20.6472)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C577D #7D421C

analogous

#1C7D72 #1C577D #1C277D

triadic

#1C577D #7D1C57 #577D1C

tetradic

#1C577D #721C7D #7D421C #277D1C

square

#1C577D #721C7D #7D421C #277D1C

split-complementary

#1C577D #7D1C27 #7D721C

monochromatic

#061119 #11344B #1C577D #277AAF #3F9AD4

Accessibility & contrast

On white

7.75

#1C577D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1C577D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C577D

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C577D	#FFFFFF	#000000	##FFFFFF
##1C577D	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#45587F

Deuteranopia (green-blind)

#384E7C

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1c577d;
/* rgb */ color: rgb(28, 87, 125);
/* oklch */ color: oklch(43.8% 0.086 241.3);

Tailwind

colors: {
  custom: {
    50: '#6786a3',
    500: '#1c577d',
    950: '#000000',
  },
}

SCSS

$custom: #1c577d;
$custom-light: #6786a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c577d",
  "rgb": {
    "r": 28,
    "g": 87,
    "b": 125
  },
  "hsl": {
    "h": 203.505,
    "s": 63.399,
    "l": 30
  },
  "oklch": {
    "l": 0.43786,
    "c": 0.08646,
    "h": 241.3
  },
  "luminance": 0.08544
}

Semantic roles & 50–950 ramp

primary

#1C577D

secondary

#B16F44

accent

#8241E6

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1C577D

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

Preview Lab → · Contrast checker → · Palette generator →