#1C5181#1C5181

#1C5181 is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.5% C 0.097 H 249.4°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#1C5181
RGB	rgb(28, 81, 129)
HSL	hsl(209, 64%, 31%)
HSV	hsv(209, 78%, 51%)
CMYK	cmyk(78.3%, 37.2%, 0%, 49.4%)
CIE-LAB	lab(33.38, 0.47, -31.97)
CIE-LCH	lch(33.38, 31.98, 270.84°)
OKLab	oklab(42.51% -0.0341 -0.091)
OKLCH	oklch(42.51% 0.097 249.4)
XYZ	xyz(7.3823, 7.7159, 21.8649)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5181 #814C1C

analogous

#1C817E #1C5181 #1C1E81

triadic

#1C5181 #811C51 #51811C

tetradic

#1C5181 #7E1C81 #814C1C #1E811C

square

#1C5181 #7E1C81 #814C1C #1E811C

split-complementary

#1C5181 #811C1E #817E1C

monochromatic

#06121C #11314F #1C5181 #2771B3 #428FD6

Accessibility & contrast

On white

8.26

#1C5181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1C5181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C5181

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5181	#FFFFFF	#000000	##FFFFFF
##1C5181	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B5483

Deuteranopia (green-blind)

#2C4A80

Tritanopia (blue-blind)

#005C63

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1c5181;
/* rgb */ color: rgb(28, 81, 129);
/* oklch */ color: oklch(42.5% 0.097 249.4);

Tailwind

colors: {
  custom: {
    50: '#6881a6',
    500: '#1c5181',
    950: '#000000',
  },
}

SCSS

$custom: #1c5181;
$custom-light: #6881a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5181",
  "rgb": {
    "r": 28,
    "g": 81,
    "b": 129
  },
  "hsl": {
    "h": 208.515,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.42512,
    "c": 0.09719,
    "h": 249.4
  },
  "luminance": 0.07717
}

Semantic roles & 50–950 ramp

primary

#1C5181

secondary

#B47A44

accent

#9040E7

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1C5181

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

Preview Lab → · Contrast checker → · Palette generator →