#1B4763#1B4763

#1B4763 is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.1% C 0.068 H 239.9°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B4763
RGB	rgb(27, 71, 99)
HSL	hsl(203, 57%, 25%)
HSV	hsv(203, 73%, 39%)
CMYK	cmyk(72.7%, 28.3%, 0%, 61.2%)
CIE-LAB	lab(28.48, -4.94, -20.84)
CIE-LCH	lch(28.48, 21.42, 256.66°)
OKLab	oklab(38.11% -0.034 -0.0587)
OKLCH	oklch(38.11% 0.068 239.9)
XYZ	xyz(4.9565, 5.6398, 12.6293)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4763 #63371B

analogous

#1B635B #1B4763 #1B2363

triadic

#1B4763 #631B47 #47631B

tetradic

#1B4763 #5B1B63 #63371B #23631B

square

#1B4763 #5B1B63 #63371B #23631B

split-complementary

#1B4763 #631B23 #635B1B

monochromatic

#071118 #0E2533 #1B4763 #286993 #358CC3

Accessibility & contrast

On white

9.87

#1B4763 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1B4763 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4763

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4763	#FFFFFF	#000000	##FFFFFF
##1B4763	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A4764

Deuteranopia (green-blind)

#304063

Tritanopia (blue-blind)

#004E51

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4763;
/* rgb */ color: rgb(27, 71, 99);
/* oklch */ color: oklch(38.1% 0.068 239.9);

Tailwind

colors: {
  custom: {
    50: '#617a8f',
    500: '#1b4763',
    950: '#000000',
  },
}

SCSS

$custom: #1b4763;
$custom-light: #617a8f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4763",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 99
  },
  "hsl": {
    "h": 203.333,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.38111,
    "c": 0.06783,
    "h": 239.9
  },
  "luminance": 0.0564
}

Semantic roles & 50–950 ramp

primary

#1B4763

secondary

#986341

accent

#8347E0

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05090C

muted

#7A7B7D

Preview Lab

Preview with #1B4763

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

Preview Lab → · Contrast checker → · Palette generator →