#1B2E9F#1B2E9F

#1B2E9F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.5% C 0.182 H 267.8°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E9F
RGB	rgb(27, 46, 159)
HSL	hsl(231, 71%, 36%)
HSV	hsv(231, 83%, 62%)
CMYK	cmyk(83%, 71.1%, 0%, 37.6%)
CIE-LAB	lab(25.83, 35.90, -62.62)
CIE-LCH	lch(25.83, 72.18, 299.83°)
OKLab	oklab(37.51% -0.0068 -0.1815)
OKLCH	oklch(37.51% 0.182 267.8)
XYZ	xyz(7.6848, 4.6893, 33.2943)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E9F #9F8C1B

analogous

#1B709F #1B2E9F #4A1B9F

triadic

#1B2E9F #9F1B2E #2E9F1B

tetradic

#1B2E9F #9F1B70 #9F8C1B #1B9F4A

square

#1B2E9F #9F1B70 #9F8C1B #1B9F4A

split-complementary

#1B2E9F #9F4A1B #709F1B

monochromatic

#091036 #121F6B #1B2E9F #243DD3 #5367E2

Accessibility & contrast

On white

10.84

#1B2E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1B2E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E9F

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E9F	#FFFFFF	#000000	##FFFFFF
##1B2E9F	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A2

Deuteranopia (green-blind)

#00379D

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b2e9f;
/* rgb */ color: rgb(27, 46, 159);
/* oklch */ color: oklch(37.5% 0.182 267.8);

Tailwind

colors: {
  custom: {
    50: '#7167bd',
    500: '#1b2e9f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e9f;
$custom-light: #7167bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e9f",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 159
  },
  "hsl": {
    "h": 231.364,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.37512,
    "c": 0.18159,
    "h": 267.8
  },
  "luminance": 0.0469
}

Semantic roles & 50–950 ramp

primary

#1B2E9F

secondary

#C5B451

accent

#D43AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1B2E9F

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

Preview Lab → · Contrast checker → · Palette generator →