#1B2A5B#1B2A5B

#1B2A5B is a dark, moderate blue. Relative luminance 0.026; OKLCH L 30.2% C 0.090 H 267.9°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A5B
RGB	rgb(27, 42, 91)
HSL	hsl(226, 54%, 23%)
HSV	hsv(226, 70%, 36%)
CMYK	cmyk(70.3%, 53.8%, 0%, 64.3%)
CIE-LAB	lab(18.56, 11.95, -31.37)
CIE-LCH	lch(18.56, 33.56, 290.85°)
OKLab	oklab(30.23% -0.0033 -0.0899)
OKLCH	oklch(30.23% 0.09 267.9)
XYZ	xyz(3.1676, 2.6440, 10.2389)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A5B #5B4C1B

analogous

#1B4A5B #1B2A5B #2C1B5B

triadic

#1B2A5B #5B1B2A #2A5B1B

tetradic

#1B2A5B #5B1B4A #5B4C1B #1B5B2C

square

#1B2A5B #5B1B4A #5B4C1B #1B5B2C

split-complementary

#1B2A5B #5B2C1B #4A5B1B

monochromatic

#070B18 #0D142C #1B2A5B #29408A #3756B9

Accessibility & contrast

On white

13.74

#1B2A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1B2A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A5B

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A5B	#FFFFFF	#000000	##FFFFFF
##1B2A5B	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F305D

Deuteranopia (green-blind)

#002A5A

Tritanopia (blue-blind)

#00353E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2a5b;
/* rgb */ color: rgb(27, 42, 91);
/* oklch */ color: oklch(30.2% 0.090 267.9);

Tailwind

colors: {
  custom: {
    50: '#60638a',
    500: '#1b2a5b',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a5b;
$custom-light: #60638a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a5b",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 91
  },
  "hsl": {
    "h": 225.938,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.30226,
    "c": 0.08998,
    "h": 267.9
  },
  "luminance": 0.02644
}

Semantic roles & 50–950 ramp

primary

#1B2A5B

secondary

#917E41

accent

#BB4ADE

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #1B2A5B

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

Preview Lab → · Contrast checker → · Palette generator →