#1B2A77#1B2A77

#1B2A77 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.132 H 269.1°. Best body text is #FFFFFF at 12.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A77
RGB	rgb(27, 42, 119)
HSL	hsl(230, 63%, 29%)
HSV	hsv(230, 77%, 47%)
CMYK	cmyk(77.3%, 64.7%, 0%, 53.3%)
CIE-LAB	lab(20.91, 23.25, -45.78)
CIE-LCH	lch(20.91, 51.35, 296.92°)
OKLab	oklab(32.72% -0.002 -0.1323)
OKLCH	oklch(32.72% 0.132 269.1)
XYZ	xyz(4.6086, 3.2204, 17.8279)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A77 #77681B

analogous

#1B5877 #1B2A77 #3A1B77

triadic

#1B2A77 #771B2A #2A771B

tetradic

#1B2A77 #771B58 #77681B #1B773A

square

#1B2A77 #771B58 #77681B #1B773A

split-complementary

#1B2A77 #773A1B #58771B

monochromatic

#060919 #101845 #1B2A77 #263CA9 #3A53D2

Accessibility & contrast

On white

12.77

#1B2A77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B2A77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A77

12.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A77	#FFFFFF	#000000	##FFFFFF
##1B2A77	1.00	12.77	1.64	12.77
#FFFFFF	12.77	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377A

Deuteranopia (green-blind)

#002E76

Tritanopia (blue-blind)

#003E4C

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2a77;
/* rgb */ color: rgb(27, 42, 119);
/* oklch */ color: oklch(32.7% 0.132 269.1);

Tailwind

colors: {
  custom: {
    50: '#67639f',
    500: '#1b2a77',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a77;
$custom-light: #67639f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a77",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 119
  },
  "hsl": {
    "h": 230.217,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.32722,
    "c": 0.13232,
    "h": 269.1
  },
  "luminance": 0.03221
}

Semantic roles & 50–950 ramp

primary

#1B2A77

secondary

#AB9A42

accent

#CB42E6

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #1B2A77

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

Preview Lab → · Contrast checker → · Palette generator →