#1B4971#1B4971

#1B4971 is a dark, moderate cyan. Relative luminance 0.062; OKLCH L 39.5% C 0.084 H 248.1°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B4971
RGB	rgb(27, 73, 113)
HSL	hsl(208, 61%, 27%)
HSV	hsv(208, 76%, 44%)
CMYK	cmyk(76.1%, 35.4%, 0%, 55.7%)
CIE-LAB	lab(29.89, -0.78, -27.53)
CIE-LCH	lch(29.89, 27.54, 268.38°)
OKLab	oklab(39.46% -0.0314 -0.0781)
OKLCH	oklch(39.46% 0.084 248.1)
XYZ	xyz(5.8140, 6.1897, 16.5079)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4971 #71431B

analogous

#1B716E #1B4971 #1B1E71

triadic

#1B4971 #711B49 #49711B

tetradic

#1B4971 #6E1B71 #71431B #1E711B

square

#1B4971 #6E1B71 #71431B #1E711B

split-complementary

#1B4971 #711B1E #716E1B

monochromatic

#061019 #0F2940 #1B4971 #2769A2 #3789CF

Accessibility & contrast

On white

9.38

#1B4971 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1B4971 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4971

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4971	#FFFFFF	#000000	##FFFFFF
##1B4971	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#374B73

Deuteranopia (green-blind)

#2B4370

Tritanopia (blue-blind)

#005357

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4971;
/* rgb */ color: rgb(27, 73, 113);
/* oklch */ color: oklch(39.5% 0.084 248.1);

Tailwind

colors: {
  custom: {
    50: '#647b9a',
    500: '#1b4971',
    950: '#000000',
  },
}

SCSS

$custom: #1b4971;
$custom-light: #647b9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4971",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 113
  },
  "hsl": {
    "h": 207.907,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.39461,
    "c": 0.08422,
    "h": 248.1
  },
  "luminance": 0.0619
}

Semantic roles & 50–950 ramp

primary

#1B4971

secondary

#A67042

accent

#8E43E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4971

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

Preview Lab → · Contrast checker → · Palette generator →