#1B4264#1B4264

#1B4264 is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 36.9% C 0.073 H 247.7°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B4264
RGB	rgb(27, 66, 100)
HSL	hsl(208, 57%, 25%)
HSV	hsv(208, 73%, 39%)
CMYK	cmyk(73%, 34%, 0%, 60.8%)
CIE-LAB	lab(26.87, -1.28, -24.01)
CIE-LCH	lch(26.87, 24.04, 266.94°)
OKLab	oklab(36.86% -0.0279 -0.068)
OKLCH	oklch(36.86% 0.073 247.7)
XYZ	xyz(4.6996, 5.0490, 12.7810)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4264 #643D1B

analogous

#1B6461 #1B4264 #1B1E64

triadic

#1B4264 #641B42 #42641B

tetradic

#1B4264 #611B64 #643D1B #1E641B

square

#1B4264 #611B64 #643D1B #1E641B

split-complementary

#1B4264 #641B1E #64611B

monochromatic

#071018 #0E2234 #1B4264 #286294 #3582C4

Accessibility & contrast

On white

10.45

#1B4264 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1B4264 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4264

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4264	#FFFFFF	#000000	##FFFFFF
##1B4264	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334365

Deuteranopia (green-blind)

#293C63

Tritanopia (blue-blind)

#004A4E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b4264;
/* rgb */ color: rgb(27, 66, 100);
/* oklch */ color: oklch(36.9% 0.073 247.7);

Tailwind

colors: {
  custom: {
    50: '#617690',
    500: '#1b4264',
    950: '#000000',
  },
}

SCSS

$custom: #1b4264;
$custom-light: #617690;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4264",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 100
  },
  "hsl": {
    "h": 207.945,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.36856,
    "c": 0.07347,
    "h": 247.7
  },
  "luminance": 0.0505
}

Semantic roles & 50–950 ramp

primary

#1B4264

secondary

#996A41

accent

#8F47E1

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05080C

muted

#7A7B7D

Preview Lab

Preview with #1B4264

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

Preview Lab → · Contrast checker → · Palette generator →