#1B2A9E#1B2A9E

#1B2A9E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.8% C 0.185 H 268.4°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A9E
RGB	rgb(27, 42, 158)
HSL	hsl(233, 71%, 36%)
HSV	hsv(233, 83%, 62%)
CMYK	cmyk(82.9%, 73.4%, 0%, 38%)
CIE-LAB	lab(24.82, 38.04, -63.68)
CIE-LCH	lch(24.82, 74.18, 300.85°)
OKLab	oklab(36.75% -0.0052 -0.1845)
OKLCH	oklch(36.75% 0.185 268.4)
XYZ	xyz(7.4494, 4.3567, 32.7894)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A9E #9E8F1B

analogous

#1B6C9E #1B2A9E #4E1B9E

triadic

#1B2A9E #9E1B2A #2A9E1B

tetradic

#1B2A9E #9E1B6C #9E8F1B #1B9E4E

square

#1B2A9E #9E1B6C #9E8F1B #1B9E4E

split-complementary

#1B2A9E #9E4E1B #6C9E1B

monochromatic

#090E35 #121C6A #1B2A9E #2438D2 #5262E1

Accessibility & contrast

On white

11.22

#1B2A9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1B2A9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A9E

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A9E	#FFFFFF	#000000	##FFFFFF
##1B2A9E	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A1

Deuteranopia (green-blind)

#00349C

Tritanopia (blue-blind)

#004B61

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b2a9e;
/* rgb */ color: rgb(27, 42, 158);
/* oklch */ color: oklch(36.8% 0.185 268.4);

Tailwind

colors: {
  custom: {
    50: '#7164bc',
    500: '#1b2a9e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a9e;
$custom-light: #7164bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a9e",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 158
  },
  "hsl": {
    "h": 233.13,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36751,
    "c": 0.18462,
    "h": 268.4
  },
  "luminance": 0.04358
}

Semantic roles & 50–950 ramp

primary

#1B2A9E

secondary

#C4B751

accent

#D93AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1B2A9E

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

Preview Lab → · Contrast checker → · Palette generator →