#1B4666#1B4666

#1B4666 is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.0% C 0.072 H 244.0°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B4666
RGB	rgb(27, 70, 102)
HSL	hsl(206, 58%, 25%)
HSV	hsv(206, 74%, 40%)
CMYK	cmyk(73.5%, 31.4%, 0%, 60%)
CIE-LAB	lab(28.31, -3.14, -23.04)
CIE-LCH	lch(28.31, 23.25, 262.25°)
OKLab	oklab(38.02% -0.0317 -0.0651)
OKLCH	oklch(38.02% 0.072 244)
XYZ	xyz(5.0395, 5.5721, 13.3777)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4666 #663B1B

analogous

#1B6660 #1B4666 #1B2066

triadic

#1B4666 #661B46 #46661B

tetradic

#1B4666 #601B66 #663B1B #20661B

square

#1B4666 #601B66 #663B1B #20661B

split-complementary

#1B4666 #661B20 #66601B

monochromatic

#061118 #0E2536 #1B4666 #286796 #3588C7

Accessibility & contrast

On white

9.93

#1B4666 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B4666 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4666

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4666	#FFFFFF	#000000	##FFFFFF
##1B4666	1.00	9.93	2.11	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384767

Deuteranopia (green-blind)

#2D4065

Tritanopia (blue-blind)

#004E51

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4666;
/* rgb */ color: rgb(27, 70, 102);
/* oklch */ color: oklch(38.0% 0.072 244.0);

Tailwind

colors: {
  custom: {
    50: '#627992',
    500: '#1b4666',
    950: '#000000',
  },
}

SCSS

$custom: #1b4666;
$custom-light: #627992;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4666",
  "rgb": {
    "r": 27,
    "g": 70,
    "b": 102
  },
  "hsl": {
    "h": 205.6,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.38021,
    "c": 0.07243,
    "h": 244
  },
  "luminance": 0.05573
}

Semantic roles & 50–950 ramp

primary

#1B4666

secondary

#9B6841

accent

#8946E1

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05090D

muted

#7A7B7D

Preview Lab

Preview with #1B4666

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

Preview Lab → · Contrast checker → · Palette generator →