#1B4372#1B4372

#1B4372 is a dark, moderate cyan. Relative luminance 0.055; OKLCH L 38.0% C 0.092 H 254.3°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1B4372
RGB	rgb(27, 67, 114)
HSL	hsl(212, 62%, 28%)
HSV	hsv(212, 76%, 45%)
CMYK	cmyk(76.3%, 41.2%, 0%, 55.3%)
CIE-LAB	lab(28.01, 3.64, -31.13)
CIE-LCH	lch(28.01, 31.35, 276.66°)
OKLab	oklab(38.01% -0.0249 -0.0888)
OKLCH	oklch(38.01% 0.092 254.3)
XYZ	xyz(5.4953, 5.4616, 16.6809)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4372 #724A1B

analogous

#1B6E72 #1B4372 #1F1B72

triadic

#1B4372 #721B43 #43721B

tetradic

#1B4372 #721B6E #724A1B #1B721F

square

#1B4372 #721B6E #724A1B #1B721F

split-complementary

#1B4372 #721F1B #6E721B

monochromatic

#060F19 #0F2641 #1B4372 #2760A3 #387ED0

Accessibility & contrast

On white

10.04

#1B4372 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1B4372 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4372

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4372	#FFFFFF	#000000	##FFFFFF
##1B4372	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4674

Deuteranopia (green-blind)

#1F3E71

Tritanopia (blue-blind)

#004E55

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b4372;
/* rgb */ color: rgb(27, 67, 114);
/* oklch */ color: oklch(38.0% 0.092 254.3);

Tailwind

colors: {
  custom: {
    50: '#64769b',
    500: '#1b4372',
    950: '#000000',
  },
}

SCSS

$custom: #1b4372;
$custom-light: #64769b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4372",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 114
  },
  "hsl": {
    "h": 212.414,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.38012,
    "c": 0.09222,
    "h": 254.3
  },
  "luminance": 0.05462
}

Semantic roles & 50–950 ramp

primary

#1B4372

secondary

#A77842

accent

#9A43E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4372

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

Preview Lab → · Contrast checker → · Palette generator →