#1B2372#1B2372

#1B2372 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.134 H 271.3°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B2372
RGB	rgb(27, 35, 114)
HSL	hsl(234, 62%, 28%)
HSV	hsv(234, 76%, 45%)
CMYK	cmyk(76.3%, 69.3%, 0%, 55.3%)
CIE-LAB	lab(18.58, 26.14, -46.38)
CIE-LCH	lch(18.58, 53.24, 299.41°)
OKLab	oklab(30.87% 0.0031 -0.1341)
OKLCH	oklch(30.87% 0.134 271.3)
XYZ	xyz(4.0893, 2.6496, 16.2122)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2372 #726A1B

analogous

#1B4E72 #1B2372 #3F1B72

triadic

#1B2372 #721B23 #23721B

tetradic

#1B2372 #721B4E #726A1B #1B723F

square

#1B2372 #721B4E #726A1B #1B723F

split-complementary

#1B2372 #723F1B #4E721B

monochromatic

#060819 #0F1441 #1B2372 #2732A3 #3846D0

Accessibility & contrast

On white

13.73

#1B2372 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1B2372 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2372

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2372	#FFFFFF	#000000	##FFFFFF
##1B2372	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)

#003174

Deuteranopia (green-blind)

#002971

Tritanopia (blue-blind)

#003847

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2372;
/* rgb */ color: rgb(27, 35, 114);
/* oklch */ color: oklch(30.9% 0.134 271.3);

Tailwind

colors: {
  custom: {
    50: '#665e9b',
    500: '#1b2372',
    950: '#000000',
  },
}

SCSS

$custom: #1b2372;
$custom-light: #665e9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2372",
  "rgb": {
    "r": 27,
    "g": 35,
    "b": 114
  },
  "hsl": {
    "h": 234.483,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.3087,
    "c": 0.13414,
    "h": 271.3
  },
  "luminance": 0.0265
}

Semantic roles & 50–950 ramp

primary

#1B2372

secondary

#A79D42

accent

#D643E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2372

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

Preview Lab → · Contrast checker → · Palette generator →