#1B2D4E#1B2D4E

#1B2D4E is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.0% C 0.065 H 261.6°. Best body text is #FFFFFF at 13.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D4E
RGB	rgb(27, 45, 78)
HSL	hsl(219, 49%, 21%)
HSV	hsv(219, 65%, 31%)
CMYK	cmyk(65.4%, 42.3%, 0%, 69.4%)
CIE-LAB	lab(18.63, 4.53, -22.55)
CIE-LCH	lch(18.63, 23.00, 281.35°)
OKLab	oklab(29.99% -0.0094 -0.064)
OKLCH	oklch(29.99% 0.065 261.6)
XYZ	xyz(2.7650, 2.6596, 7.5739)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D4E #4E3C1B

analogous

#1B464E #1B2D4E #231B4E

triadic

#1B2D4E #4E1B2D #2D4E1B

tetradic

#1B2D4E #4E1B46 #4E3C1B #1B4E23

square

#1B2D4E #4E1B46 #4E3C1B #1B4E23

split-complementary

#1B2D4E #4E231B #464E1B

monochromatic

#080D17 #0B1321 #1B2D4E #2B477B #3A61A9

Accessibility & contrast

On white

13.71

#1B2D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1B2D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D4E

13.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D4E	#FFFFFF	#000000	##FFFFFF
##1B2D4E	1.00	13.71	1.53	13.71
#FFFFFF	13.71	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F304F

Deuteranopia (green-blind)

#182B4D

Tritanopia (blue-blind)

#003439

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2d4e;
/* rgb */ color: rgb(27, 45, 78);
/* oklch */ color: oklch(30.0% 0.065 261.6);

Tailwind

colors: {
  custom: {
    50: '#5d6580',
    500: '#1b2d4e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d4e;
$custom-light: #5d6580;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d4e",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 78
  },
  "hsl": {
    "h": 218.824,
    "s": 48.571,
    "l": 20.588
  },
  "oklch": {
    "l": 0.2999,
    "c": 0.06469,
    "h": 261.6
  },
  "luminance": 0.0266
}

Semantic roles & 50–950 ramp

primary

#1B2D4E

secondary

#846C41

accent

#A850D8

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #1B2D4E

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

Preview Lab → · Contrast checker → · Palette generator →