#1B2D9F#1B2D9F

#1B2D9F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.3% C 0.183 H 268.0°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D9F
RGB	rgb(27, 45, 159)
HSL	hsl(232, 71%, 36%)
HSV	hsv(232, 83%, 62%)
CMYK	cmyk(83%, 71.7%, 0%, 37.6%)
CIE-LAB	lab(25.60, 36.53, -63.00)
CIE-LCH	lch(25.60, 72.83, 300.11°)
OKLab	oklab(37.35% -0.0064 -0.1826)
OKLCH	oklch(37.35% 0.183 268)
XYZ	xyz(7.6462, 4.6121, 33.2814)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D9F #9F8D1B

analogous

#1B6F9F #1B2D9F #4B1B9F

triadic

#1B2D9F #9F1B2D #2D9F1B

tetradic

#1B2D9F #9F1B6F #9F8D1B #1B9F4B

square

#1B2D9F #9F1B6F #9F8D1B #1B9F4B

split-complementary

#1B2D9F #9F4B1B #6F9F1B

monochromatic

#090F36 #121E6B #1B2D9F #243CD3 #5366E2

Accessibility & contrast

On white

10.92

#1B2D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1B2D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D9F

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D9F	#FFFFFF	#000000	##FFFFFF
##1B2D9F	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A2

Deuteranopia (green-blind)

#00369D

Tritanopia (blue-blind)

#004D63

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b2d9f;
/* rgb */ color: rgb(27, 45, 159);
/* oklch */ color: oklch(37.3% 0.183 268.0);

Tailwind

colors: {
  custom: {
    50: '#7166bd',
    500: '#1b2d9f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d9f;
$custom-light: #7166bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d9f",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 159
  },
  "hsl": {
    "h": 231.818,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.37345,
    "c": 0.18268,
    "h": 268
  },
  "luminance": 0.04613
}

Semantic roles & 50–950 ramp

primary

#1B2D9F

secondary

#C5B551

accent

#D53AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1B2D9F

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

Preview Lab → · Contrast checker → · Palette generator →