#1B2A8B#1B2A8B

#1B2A8B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.7% C 0.160 H 268.9°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A8B
RGB	rgb(27, 42, 139)
HSL	hsl(232, 67%, 33%)
HSV	hsv(232, 81%, 55%)
CMYK	cmyk(80.6%, 69.8%, 0%, 45.5%)
CIE-LAB	lab(22.84, 31.01, -55.24)
CIE-LCH	lch(22.84, 63.35, 299.31°)
OKLab	oklab(34.73% -0.0032 -0.1599)
OKLCH	oklch(34.73% 0.16 268.9)
XYZ	xyz(5.9386, 3.7523, 24.8324)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A8B #8B7C1B

analogous

#1B628B #1B2A8B #441B8B

triadic

#1B2A8B #8B1B2A #2A8B1B

tetradic

#1B2A8B #8B1B62 #8B7C1B #1B8B44

square

#1B2A8B #8B1B62 #8B7C1B #1B8B44

split-complementary

#1B2A8B #8B441B #628B1B

monochromatic

#070B25 #111B58 #1B2A8B #2539BE #4559DB

Accessibility & contrast

On white

12.00

#1B2A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B2A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A8B

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A8B	#FFFFFF	#000000	##FFFFFF
##1B2A8B	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8E

Deuteranopia (green-blind)

#003189

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2a8b;
/* rgb */ color: rgb(27, 42, 139);
/* oklch */ color: oklch(34.7% 0.160 268.9);

Tailwind

colors: {
  custom: {
    50: '#6c63ae',
    500: '#1b2a8b',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a8b;
$custom-light: #6c63ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a8b",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 139
  },
  "hsl": {
    "h": 231.964,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.34726,
    "c": 0.15998,
    "h": 268.9
  },
  "luminance": 0.03753
}

Semantic roles & 50–950 ramp

primary

#1B2A8B

secondary

#BCAD45

accent

#D33DEA

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B2A8B

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

Preview Lab → · Contrast checker → · Palette generator →