#1B2D4D#1B2D4D

#1B2D4D is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.9% C 0.063 H 261.2°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D4D
RGB	rgb(27, 45, 77)
HSL	hsl(218, 48%, 20%)
HSV	hsv(218, 65%, 30%)
CMYK	cmyk(64.9%, 41.6%, 0%, 69.8%)
CIE-LAB	lab(18.56, 4.13, -21.98)
CIE-LCH	lch(18.56, 22.36, 280.65°)
OKLab	oklab(29.92% -0.0097 -0.0623)
OKLCH	oklch(29.92% 0.063 261.2)
XYZ	xyz(2.7295, 2.6454, 7.3865)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D4D #4D3B1B

analogous

#1B464D #1B2D4D #221B4D

triadic

#1B2D4D #4D1B2D #2D4D1B

tetradic

#1B2D4D #4D1B46 #4D3B1B #1B4D22

square

#1B2D4D #4D1B46 #4D3B1B #1B4D22

split-complementary

#1B2D4D #4D221B #464D1B

monochromatic

#080D17 #0B1320 #1B2D4D #2B477A #3B62A8

Accessibility & contrast

On white

13.73

#1B2D4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1B2D4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D4D

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D4D	#FFFFFF	#000000	##FFFFFF
##1B2D4D	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20304E

Deuteranopia (green-blind)

#192B4C

Tritanopia (blue-blind)

#003439

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2d4d;
/* rgb */ color: rgb(27, 45, 77);
/* oklch */ color: oklch(29.9% 0.063 261.2);

Tailwind

colors: {
  custom: {
    50: '#5c657f',
    500: '#1b2d4d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d4d;
$custom-light: #5c657f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d4d",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 77
  },
  "hsl": {
    "h": 218.4,
    "s": 48.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.29922,
    "c": 0.06306,
    "h": 261.2
  },
  "luminance": 0.02646
}

Semantic roles & 50–950 ramp

primary

#1B2D4D

secondary

#836B41

accent

#A750D8

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #1B2D4D

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

Preview Lab → · Contrast checker → · Palette generator →