#1B2A73#1B2A73

#1B2A73 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.3% C 0.127 H 269.1°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A73
RGB	rgb(27, 42, 115)
HSL	hsl(230, 62%, 28%)
HSV	hsv(230, 77%, 45%)
CMYK	cmyk(76.5%, 63.5%, 0%, 54.9%)
CIE-LAB	lab(20.54, 21.66, -43.82)
CIE-LCH	lch(20.54, 48.88, 296.30°)
OKLab	oklab(32.34% -0.002 -0.1265)
OKLCH	oklch(32.34% 0.127 269.1)
XYZ	xyz(4.3734, 3.1263, 16.5893)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A73 #73641B

analogous

#1B5673 #1B2A73 #381B73

triadic

#1B2A73 #731B2A #2A731B

tetradic

#1B2A73 #731B56 #73641B #1B7338

square

#1B2A73 #731B56 #73641B #1B7338

split-complementary

#1B2A73 #73381B #56731B

monochromatic

#060919 #0F1841 #1B2A73 #273CA5 #3852D0

Accessibility & contrast

On white

12.92

#1B2A73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B2A73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A73

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A73	#FFFFFF	#000000	##FFFFFF
##1B2A73	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003675

Deuteranopia (green-blind)

#002D72

Tritanopia (blue-blind)

#003D4A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2a73;
/* rgb */ color: rgb(27, 42, 115);
/* oklch */ color: oklch(32.3% 0.127 269.1);

Tailwind

colors: {
  custom: {
    50: '#66639c',
    500: '#1b2a73',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a73;
$custom-light: #66639c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a73",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 115
  },
  "hsl": {
    "h": 229.773,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.32341,
    "c": 0.12654,
    "h": 269.1
  },
  "luminance": 0.03127
}

Semantic roles & 50–950 ramp

primary

#1B2A73

secondary

#A89642

accent

#C943E5

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1B2A73

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

Preview Lab → · Contrast checker → · Palette generator →