#1B4373#1B4373

#1B4373 is a dark, moderate cyan. Relative luminance 0.055; OKLCH L 38.1% C 0.094 H 254.8°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B4373
RGB	rgb(27, 67, 115)
HSL	hsl(213, 62%, 28%)
HSV	hsv(213, 77%, 45%)
CMYK	cmyk(76.5%, 41.7%, 0%, 54.9%)
CIE-LAB	lab(28.07, 4.04, -31.67)
CIE-LCH	lch(28.07, 31.93, 277.27°)
OKLab	oklab(38.08% -0.0246 -0.0904)
OKLCH	oklch(38.08% 0.094 254.8)
XYZ	xyz(5.5525, 5.4845, 16.9823)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4373 #734B1B

analogous

#1B6F73 #1B4373 #1F1B73

triadic

#1B4373 #731B43 #43731B

tetradic

#1B4373 #731B6F #734B1B #1B731F

square

#1B4373 #731B6F #734B1B #1B731F

split-complementary

#1B4373 #731F1B #6F731B

monochromatic

#060E19 #0F2641 #1B4373 #2760A5 #387DD0

Accessibility & contrast

On white

10.01

#1B4373 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1B4373 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4373

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4373	#FFFFFF	#000000	##FFFFFF
##1B4373	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4775

Deuteranopia (green-blind)

#1E3F72

Tritanopia (blue-blind)

#004E55

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b4373;
/* rgb */ color: rgb(27, 67, 115);
/* oklch */ color: oklch(38.1% 0.094 254.8);

Tailwind

colors: {
  custom: {
    50: '#64769b',
    500: '#1b4373',
    950: '#000000',
  },
}

SCSS

$custom: #1b4373;
$custom-light: #64769b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4373",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 115
  },
  "hsl": {
    "h": 212.727,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.3808,
    "c": 0.09367,
    "h": 254.8
  },
  "luminance": 0.05485
}

Semantic roles & 50–950 ramp

primary

#1B4373

secondary

#A87A42

accent

#9B43E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4373

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

Preview Lab → · Contrast checker → · Palette generator →