#1B4C7B#1B4C7B

#1B4C7B is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.8% C 0.095 H 250.6°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B4C7B
RGB	rgb(27, 76, 123)
HSL	hsl(209, 64%, 29%)
HSV	hsv(209, 78%, 48%)
CMYK	cmyk(78%, 38.2%, 0%, 51.8%)
CIE-LAB	lab(31.42, 1.22, -31.37)
CIE-LCH	lch(31.42, 31.39, 272.23°)
OKLab	oklab(40.85% -0.0315 -0.0893)
OKLCH	oklch(40.85% 0.095 250.6)
XYZ	xyz(6.6102, 6.8312, 19.7052)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4C7B #7B4A1B

analogous

#1B7B7A #1B4C7B #1B1C7B

triadic

#1B4C7B #7B1B4C #4C7B1B

tetradic

#1B4C7B #7A1B7B #7B4A1B #1C7B1B

square

#1B4C7B #7A1B7B #7B4A1B #1C7B1B

split-complementary

#1B4C7B #7B1B1C #7B7A1B

monochromatic

#061019 #102D49 #1B4C7B #266BAD #3C8AD4

Accessibility & contrast

On white

8.87

#1B4C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B4C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C7B

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4C7B	#FFFFFF	#000000	##FFFFFF
##1B4C7B	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364F7D

Deuteranopia (green-blind)

#28467A

Tritanopia (blue-blind)

#00575D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4c7b;
/* rgb */ color: rgb(27, 76, 123);
/* oklch */ color: oklch(40.8% 0.095 250.6);

Tailwind

colors: {
  custom: {
    50: '#667da1',
    500: '#1b4c7b',
    950: '#000000',
  },
}

SCSS

$custom: #1b4c7b;
$custom-light: #667da1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4c7b",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 123
  },
  "hsl": {
    "h": 209.375,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.4085,
    "c": 0.09472,
    "h": 250.6
  },
  "luminance": 0.06832
}

Semantic roles & 50–950 ramp

primary

#1B4C7B

secondary

#AF7843

accent

#9241E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#07090F

muted

#7A7B7E

Preview Lab

Preview with #1B4C7B

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

Preview Lab → · Contrast checker → · Palette generator →