#1C4F5B#1C4F5B

#1C4F5B is a dark, muted cyan. Relative luminance 0.066; OKLCH L 39.9% C 0.057 H 216.0°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#1C4F5B
RGB	rgb(28, 79, 91)
HSL	hsl(191, 53%, 23%)
HSV	hsv(191, 69%, 36%)
CMYK	cmyk(69.2%, 13.2%, 0%, 64.3%)
CIE-LAB	lab(30.86, -12.64, -12.06)
CIE-LCH	lch(30.86, 17.47, 223.64°)
OKLab	oklab(39.9% -0.0461 -0.0335)
OKLCH	oklch(39.9% 0.057 216)
XYZ	xyz(5.1624, 6.5936, 10.8961)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4F5B #5B281C

analogous

#1C5B47 #1C4F5B #1C2F5B

triadic

#1C4F5B #5B1C4F #4F5B1C

tetradic

#1C4F5B #471C5B #5B281C #2F5B1C

square

#1C4F5B #471C5B #5B281C #2F5B1C

split-complementary

#1C4F5B #5B1C2F #5B471C

monochromatic

#071417 #0E262C #1C4F5B #2A788A #39A0B9

Accessibility & contrast

On white

9.06

#1C4F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1C4F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4F5B

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4F5B	#FFFFFF	#000000	##FFFFFF
##1C4F5B	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#474C5C

Deuteranopia (green-blind)

#3E465B

Tritanopia (blue-blind)

#005353

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c4f5b;
/* rgb */ color: rgb(28, 79, 91);
/* oklch */ color: oklch(39.9% 0.057 216.0);

Tailwind

colors: {
  custom: {
    50: '#618089',
    500: '#1c4f5b',
    950: '#000000',
  },
}

SCSS

$custom: #1c4f5b;
$custom-light: #618089;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4f5b",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 91
  },
  "hsl": {
    "h": 191.429,
    "s": 52.941,
    "l": 23.333
  },
  "oklch": {
    "l": 0.39899,
    "c": 0.05697,
    "h": 216
  },
  "luminance": 0.06594
}

Semantic roles & 50–950 ramp

primary

#1C4F5B

secondary

#905142

accent

#674BDC

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0B

muted

#7A7C7C

Preview Lab

Preview with #1C4F5B

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

Preview Lab → · Contrast checker → · Palette generator →