#1B2B9D#1B2B9D

#1B2B9D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.8% C 0.182 H 268.3°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B9D
RGB	rgb(27, 43, 157)
HSL	hsl(233, 71%, 36%)
HSV	hsv(233, 83%, 62%)
CMYK	cmyk(82.8%, 72.6%, 0%, 38.4%)
CIE-LAB	lab(24.93, 37.06, -62.88)
CIE-LCH	lch(24.93, 72.99, 300.51°)
OKLab	oklab(36.8% -0.0055 -0.1822)
OKLCH	oklch(36.8% 0.182 268.3)
XYZ	xyz(7.3996, 4.3942, 32.3499)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B9D #9D8D1B

analogous

#1B6C9D #1B2B9D #4C1B9D

triadic

#1B2B9D #9D1B2B #2B9D1B

tetradic

#1B2B9D #9D1B6C #9D8D1B #1B9D4C

square

#1B2B9D #9D1B6C #9D8D1B #1B9D4C

split-complementary

#1B2B9D #9D4C1B #6C9D1B

monochromatic

#090E35 #121D69 #1B2B9D #2439D1 #5163E1

Accessibility & contrast

On white

11.18

#1B2B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1B2B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B9D

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B9D	#FFFFFF	#000000	##FFFFFF
##1B2B9D	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A0

Deuteranopia (green-blind)

#00359B

Tritanopia (blue-blind)

#004C61

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b2b9d;
/* rgb */ color: rgb(27, 43, 157);
/* oklch */ color: oklch(36.8% 0.182 268.3);

Tailwind

colors: {
  custom: {
    50: '#7165bb',
    500: '#1b2b9d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b9d;
$custom-light: #7165bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b9d",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 157
  },
  "hsl": {
    "h": 232.615,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.36803,
    "c": 0.18229,
    "h": 268.3
  },
  "luminance": 0.04395
}

Semantic roles & 50–950 ramp

primary

#1B2B9D

secondary

#C4B650

accent

#D73AED

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1B2B9D

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

Preview Lab → · Contrast checker → · Palette generator →