#1B2D9E#1B2D9E

#1B2D9E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.2% C 0.181 H 268.0°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D9E
RGB	rgb(27, 45, 158)
HSL	hsl(232, 71%, 36%)
HSV	hsv(232, 83%, 62%)
CMYK	cmyk(82.9%, 71.5%, 0%, 38%)
CIE-LAB	lab(25.50, 36.17, -62.56)
CIE-LCH	lch(25.50, 72.26, 300.03°)
OKLab	oklab(37.24% -0.0063 -0.1813)
OKLCH	oklch(37.24% 0.181 268)
XYZ	xyz(7.5598, 4.5775, 32.8262)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D9E #9E8C1B

analogous

#1B6F9E #1B2D9E #4B1B9E

triadic

#1B2D9E #9E1B2D #2D9E1B

tetradic

#1B2D9E #9E1B6F #9E8C1B #1B9E4B

square

#1B2D9E #9E1B6F #9E8C1B #1B9E4B

split-complementary

#1B2D9E #9E4B1B #6F9E1B

monochromatic

#090F35 #121E6A #1B2D9E #243CD2 #5266E1

Accessibility & contrast

On white

10.96

#1B2D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1B2D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D9E

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D9E	#FFFFFF	#000000	##FFFFFF
##1B2D9E	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A1

Deuteranopia (green-blind)

#00369C

Tritanopia (blue-blind)

#004D62

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1b2d9e;
/* rgb */ color: rgb(27, 45, 158);
/* oklch */ color: oklch(37.2% 0.181 268.0);

Tailwind

colors: {
  custom: {
    50: '#7166bc',
    500: '#1b2d9e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d9e;
$custom-light: #7166bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d9e",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 158
  },
  "hsl": {
    "h": 231.756,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37239,
    "c": 0.18141,
    "h": 268
  },
  "luminance": 0.04578
}

Semantic roles & 50–950 ramp

primary

#1B2D9E

secondary

#C4B451

accent

#D53AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1B2D9E

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

Preview Lab → · Contrast checker → · Palette generator →