#1B4F73#1B4F73

#1B4F73 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.1% C 0.081 H 242.8°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F73
RGB	rgb(27, 79, 115)
HSL	hsl(205, 62%, 28%)
HSV	hsv(205, 77%, 45%)
CMYK	cmyk(76.5%, 31.3%, 0%, 54.9%)
CIE-LAB	lab(31.95, -3.88, -25.54)
CIE-LCH	lch(31.95, 25.83, 261.36°)
OKLab	oklab(41.12% -0.0371 -0.0723)
OKLCH	oklch(41.12% 0.081 242.8)
XYZ	xyz(6.3413, 7.0621, 17.2452)
Luminance	0.0706 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F73 #733F1B

analogous

#1B736B #1B4F73 #1B2373

triadic

#1B4F73 #731B4F #4F731B

tetradic

#1B4F73 #6B1B73 #733F1B #23731B

square

#1B4F73 #6B1B73 #733F1B #23731B

split-complementary

#1B4F73 #731B23 #736B1B

monochromatic

#061119 #0F2D41 #1B4F73 #2771A5 #3892D0

Accessibility & contrast

On white

8.70

#1B4F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B4F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F73

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F73	#FFFFFF	#000000	##FFFFFF
##1B4F73	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5075

Deuteranopia (green-blind)

#324772

Tritanopia (blue-blind)

#00585C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4f73;
/* rgb */ color: rgb(27, 79, 115);
/* oklch */ color: oklch(41.1% 0.081 242.8);

Tailwind

colors: {
  custom: {
    50: '#65809b',
    500: '#1b4f73',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f73;
$custom-light: #65809b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f73",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 115
  },
  "hsl": {
    "h": 204.545,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.41122,
    "c": 0.08124,
    "h": 242.8
  },
  "luminance": 0.07063
}

Semantic roles & 50–950 ramp

primary

#1B4F73

secondary

#A86C42

accent

#8543E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4F73

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

Preview Lab → · Contrast checker → · Palette generator →