#1B2B77#1B2B77

#1B2B77 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.131 H 268.8°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B77
RGB	rgb(27, 43, 119)
HSL	hsl(230, 63%, 29%)
HSV	hsv(230, 77%, 47%)
CMYK	cmyk(77.3%, 63.9%, 0%, 53.3%)
CIE-LAB	lab(21.18, 22.55, -45.34)
CIE-LCH	lch(21.18, 50.64, 296.44°)
OKLab	oklab(32.92% -0.0028 -0.131)
OKLCH	oklch(32.92% 0.131 268.8)
XYZ	xyz(4.6445, 3.2922, 17.8399)
Luminance	0.0329 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B77 #77671B

analogous

#1B5977 #1B2B77 #391B77

triadic

#1B2B77 #771B2B #2B771B

tetradic

#1B2B77 #771B59 #77671B #1B7739

square

#1B2B77 #771B59 #77671B #1B7739

split-complementary

#1B2B77 #77391B #59771B

monochromatic

#060919 #101945 #1B2B77 #263DA9 #3A55D2

Accessibility & contrast

On white

12.66

#1B2B77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1B2B77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B77

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B77	#FFFFFF	#000000	##FFFFFF
##1B2B77	1.00	12.66	1.66	12.66
#FFFFFF	12.66	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003779

Deuteranopia (green-blind)

#002F76

Tritanopia (blue-blind)

#003E4C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2b77;
/* rgb */ color: rgb(27, 43, 119);
/* oklch */ color: oklch(32.9% 0.131 268.8);

Tailwind

colors: {
  custom: {
    50: '#67649f',
    500: '#1b2b77',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b77;
$custom-light: #67649f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b77",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 119
  },
  "hsl": {
    "h": 229.565,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.32924,
    "c": 0.13101,
    "h": 268.8
  },
  "luminance": 0.03293
}

Semantic roles & 50–950 ramp

primary

#1B2B77

secondary

#AB9942

accent

#C942E6

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1B2B77

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

Preview Lab → · Contrast checker → · Palette generator →