#1B4765#1B4765

#1B4765 is a dark, moderate cyan. Relative luminance 0.057; OKLCH L 38.2% C 0.070 H 241.8°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B4765
RGB	rgb(27, 71, 101)
HSL	hsl(204, 58%, 25%)
HSV	hsv(204, 73%, 40%)
CMYK	cmyk(73.3%, 29.7%, 0%, 60.4%)
CIE-LAB	lab(28.59, -4.17, -21.96)
CIE-LCH	lch(28.59, 22.35, 259.24°)
OKLab	oklab(38.22% -0.0332 -0.062)
OKLCH	oklch(38.22% 0.07 241.8)
XYZ	xyz(5.0533, 5.6785, 13.1391)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4765 #65391B

analogous

#1B655E #1B4765 #1B2265

triadic

#1B4765 #651B47 #47651B

tetradic

#1B4765 #5E1B65 #65391B #22651B

square

#1B4765 #5E1B65 #65391B #22651B

split-complementary

#1B4765 #651B22 #655E1B

monochromatic

#061118 #0E2535 #1B4765 #286995 #358BC6

Accessibility & contrast

On white

9.83

#1B4765 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1B4765 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4765

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4765	#FFFFFF	#000000	##FFFFFF
##1B4765	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#394766

Deuteranopia (green-blind)

#2F4064

Tritanopia (blue-blind)

#004E51

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4765;
/* rgb */ color: rgb(27, 71, 101);
/* oklch */ color: oklch(38.2% 0.070 241.8);

Tailwind

colors: {
  custom: {
    50: '#617a91',
    500: '#1b4765',
    950: '#000000',
  },
}

SCSS

$custom: #1b4765;
$custom-light: #617a91;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4765",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 101
  },
  "hsl": {
    "h": 204.324,
    "s": 57.813,
    "l": 25.098
  },
  "oklch": {
    "l": 0.38225,
    "c": 0.07031,
    "h": 241.8
  },
  "luminance": 0.05679
}

Semantic roles & 50–950 ramp

primary

#1B4765

secondary

#9A6541

accent

#8547E1

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05090C

muted

#7A7B7D

Preview Lab

Preview with #1B4765

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

Preview Lab → · Contrast checker → · Palette generator →