#1B4E72#1B4E72

#1B4E72 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 40.8% C 0.081 H 243.3°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E72
RGB	rgb(27, 78, 114)
HSL	hsl(205, 62%, 28%)
HSV	hsv(205, 76%, 45%)
CMYK	cmyk(76.3%, 31.6%, 0%, 55.3%)
CIE-LAB	lab(31.57, -3.63, -25.51)
CIE-LCH	lch(31.57, 25.77, 261.90°)
OKLab	oklab(40.81% -0.0364 -0.0722)
OKLCH	oklch(40.81% 0.081 243.3)
XYZ	xyz(6.2125, 6.8960, 16.9200)
Luminance	0.0690 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E72 #723F1B

analogous

#1B726B #1B4E72 #1B2272

triadic

#1B4E72 #721B4E #4E721B

tetradic

#1B4E72 #6B1B72 #723F1B #22721B

square

#1B4E72 #6B1B72 #723F1B #22721B

split-complementary

#1B4E72 #721B22 #726B1B

monochromatic

#061119 #0F2C41 #1B4E72 #2770A3 #3891D0

Accessibility & contrast

On white

8.83

#1B4E72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B4E72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E72

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E72	#FFFFFF	#000000	##FFFFFF
##1B4E72	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4F74

Deuteranopia (green-blind)

#314771

Tritanopia (blue-blind)

#00575B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4e72;
/* rgb */ color: rgb(27, 78, 114);
/* oklch */ color: oklch(40.8% 0.081 243.3);

Tailwind

colors: {
  custom: {
    50: '#647f9a',
    500: '#1b4e72',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e72;
$custom-light: #647f9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e72",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 114
  },
  "hsl": {
    "h": 204.828,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.40805,
    "c": 0.08084,
    "h": 243.3
  },
  "luminance": 0.06897
}

Semantic roles & 50–950 ramp

primary

#1B4E72

secondary

#A76C42

accent

#8643E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4E72

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

Preview Lab → · Contrast checker → · Palette generator →