#1B2C4D#1B2C4D

#1B2C4D is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.7% C 0.064 H 262.5°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C4D
RGB	rgb(27, 44, 77)
HSL	hsl(220, 48%, 20%)
HSV	hsv(220, 65%, 30%)
CMYK	cmyk(64.9%, 42.9%, 0%, 69.8%)
CIE-LAB	lab(18.23, 4.85, -22.50)
CIE-LCH	lch(18.23, 23.02, 282.17°)
OKLab	oklab(29.67% -0.0084 -0.0639)
OKLCH	oklch(29.67% 0.064 262.5)
XYZ	xyz(2.6918, 2.5700, 7.3739)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C4D #4D3C1B

analogous

#1B454D #1B2C4D #231B4D

triadic

#1B2C4D #4D1B2C #2C4D1B

tetradic

#1B2C4D #4D1B45 #4D3C1B #1B4D23

square

#1B2C4D #4D1B45 #4D3C1B #1B4D23

split-complementary

#1B2C4D #4D231B #454D1B

monochromatic

#080D17 #0B1220 #1B2C4D #2B467A #3B60A8

Accessibility & contrast

On white

13.87

#1B2C4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1B2C4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C4D

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C4D	#FFFFFF	#000000	##FFFFFF
##1B2C4D	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E2F4E

Deuteranopia (green-blind)

#172A4C

Tritanopia (blue-blind)

#003338

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b2c4d;
/* rgb */ color: rgb(27, 44, 77);
/* oklch */ color: oklch(29.7% 0.064 262.5);

Tailwind

colors: {
  custom: {
    50: '#5c647f',
    500: '#1b2c4d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c4d;
$custom-light: #5c647f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c4d",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 77
  },
  "hsl": {
    "h": 219.6,
    "s": 48.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.29665,
    "c": 0.06441,
    "h": 262.5
  },
  "luminance": 0.0257
}

Semantic roles & 50–950 ramp

primary

#1B2C4D

secondary

#836C41

accent

#AA50D8

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #1B2C4D

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

Preview Lab → · Contrast checker → · Palette generator →