#1B4B72#1B4B72

#1B4B72 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 40.0% C 0.084 H 246.6°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B72
RGB	rgb(27, 75, 114)
HSL	hsl(207, 62%, 28%)
HSV	hsv(207, 76%, 45%)
CMYK	cmyk(76.3%, 34.2%, 0%, 55.3%)
CIE-LAB	lab(30.59, -1.69, -27.05)
CIE-LCH	lch(30.59, 27.10, 266.42°)
OKLab	oklab(40.03% -0.0332 -0.0767)
OKLCH	oklch(40.03% 0.084 246.6)
XYZ	xyz(6.0042, 6.4794, 16.8505)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B72 #72421B

analogous

#1B726E #1B4B72 #1B1F72

triadic

#1B4B72 #721B4B #4B721B

tetradic

#1B4B72 #6E1B72 #72421B #1F721B

square

#1B4B72 #6E1B72 #72421B #1F721B

split-complementary

#1B4B72 #721B1F #726E1B

monochromatic

#061019 #0F2A41 #1B4B72 #276CA3 #388CD0

Accessibility & contrast

On white

9.15

#1B4B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B4B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B72

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B72	#FFFFFF	#000000	##FFFFFF
##1B4B72	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#394D74

Deuteranopia (green-blind)

#2D4471

Tritanopia (blue-blind)

#005459

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4b72;
/* rgb */ color: rgb(27, 75, 114);
/* oklch */ color: oklch(40.0% 0.084 246.6);

Tailwind

colors: {
  custom: {
    50: '#647d9b',
    500: '#1b4b72',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b72;
$custom-light: #647d9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b72",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 114
  },
  "hsl": {
    "h": 206.897,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.40034,
    "c": 0.08358,
    "h": 246.6
  },
  "luminance": 0.0648
}

Semantic roles & 50–950 ramp

primary

#1B4B72

secondary

#A76F42

accent

#8C43E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4B72

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

Preview Lab → · Contrast checker → · Palette generator →