#1B2F64#1B2F64

#1B2F64 is a dark, moderate blue. Relative luminance 0.032; OKLCH L 32.1% C 0.097 H 265.7°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F64
RGB	rgb(27, 47, 100)
HSL	hsl(224, 57%, 25%)
HSV	hsv(224, 73%, 39%)
CMYK	cmyk(73%, 53%, 0%, 60.8%)
CIE-LAB	lab(20.77, 11.98, -33.72)
CIE-LCH	lch(20.77, 35.79, 289.56°)
OKLab	oklab(32.13% -0.0074 -0.0968)
OKLCH	oklch(32.13% 0.097 265.7)
XYZ	xyz(3.7680, 3.1858, 12.4705)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F64 #64501B

analogous

#1B5364 #1B2F64 #2C1B64

triadic

#1B2F64 #641B2F #2F641B

tetradic

#1B2F64 #641B53 #64501B #1B642C

square

#1B2F64 #641B53 #64501B #1B642C

split-complementary

#1B2F64 #642C1B #53641B

monochromatic

#070B18 #0E1834 #1B2F64 #284694 #355CC4

Accessibility & contrast

On white

12.83

#1B2F64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B2F64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F64

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F64	#FFFFFF	#000000	##FFFFFF
##1B2F64	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#113666

Deuteranopia (green-blind)

#002F63

Tritanopia (blue-blind)

#003B44

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2f64;
/* rgb */ color: rgb(27, 47, 100);
/* oklch */ color: oklch(32.1% 0.097 265.7);

Tailwind

colors: {
  custom: {
    50: '#616790',
    500: '#1b2f64',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f64;
$custom-light: #616790;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f64",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 100
  },
  "hsl": {
    "h": 223.562,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.32126,
    "c": 0.09706,
    "h": 265.7
  },
  "luminance": 0.03186
}

Semantic roles & 50–950 ramp

primary

#1B2F64

secondary

#998141

accent

#B747E1

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05060C

muted

#7A7A7D

Preview Lab

Preview with #1B2F64

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

Preview Lab → · Contrast checker → · Palette generator →