#1B2C73#1B2C73

#1B2C73 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.8% C 0.124 H 268.4°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C73
RGB	rgb(27, 44, 115)
HSL	hsl(228, 62%, 28%)
HSV	hsv(228, 77%, 45%)
CMYK	cmyk(76.5%, 61.7%, 0%, 54.9%)
CIE-LAB	lab(21.10, 20.24, -42.91)
CIE-LCH	lch(21.10, 47.44, 295.25°)
OKLab	oklab(32.76% -0.0035 -0.1238)
OKLCH	oklch(32.76% 0.124 268.4)
XYZ	xyz(4.4461, 3.2717, 16.6135)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C73 #73621B

analogous

#1B5873 #1B2C73 #361B73

triadic

#1B2C73 #731B2C #2C731B

tetradic

#1B2C73 #731B58 #73621B #1B7336

square

#1B2C73 #731B58 #73621B #1B7336

split-complementary

#1B2C73 #73361B #58731B

monochromatic

#060919 #0F1941 #1B2C73 #273FA5 #3856D0

Accessibility & contrast

On white

12.69

#1B2C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B2C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C73

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C73	#FFFFFF	#000000	##FFFFFF
##1B2C73	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003775

Deuteranopia (green-blind)

#002F72

Tritanopia (blue-blind)

#003E4B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2c73;
/* rgb */ color: rgb(27, 44, 115);
/* oklch */ color: oklch(32.8% 0.124 268.4);

Tailwind

colors: {
  custom: {
    50: '#65649c',
    500: '#1b2c73',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c73;
$custom-light: #65649c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c73",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 115
  },
  "hsl": {
    "h": 228.409,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.32756,
    "c": 0.12387,
    "h": 268.4
  },
  "luminance": 0.03272
}

Semantic roles & 50–950 ramp

primary

#1B2C73

secondary

#A89442

accent

#C643E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2C73

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

Preview Lab → · Contrast checker → · Palette generator →