#1B2E9E#1B2E9E

#1B2E9E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.4% C 0.180 H 267.9°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E9E
RGB	rgb(27, 46, 158)
HSL	hsl(231, 71%, 36%)
HSV	hsv(231, 83%, 62%)
CMYK	cmyk(82.9%, 70.9%, 0%, 38%)
CIE-LAB	lab(25.73, 35.53, -62.18)
CIE-LCH	lch(25.73, 71.62, 299.75°)
OKLab	oklab(37.41% -0.0068 -0.1802)
OKLCH	oklch(37.41% 0.18 267.9)
XYZ	xyz(7.5984, 4.6547, 32.8391)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E9E #9E8B1B

analogous

#1B709E #1B2E9E #4A1B9E

triadic

#1B2E9E #9E1B2E #2E9E1B

tetradic

#1B2E9E #9E1B70 #9E8B1B #1B9E4A

square

#1B2E9E #9E1B70 #9E8B1B #1B9E4A

split-complementary

#1B2E9E #9E4A1B #709E1B

monochromatic

#091035 #121F6A #1B2E9E #243DD2 #5267E1

Accessibility & contrast

On white

10.87

#1B2E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1B2E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E9E

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E9E	#FFFFFF	#000000	##FFFFFF
##1B2E9E	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A1

Deuteranopia (green-blind)

#00379C

Tritanopia (blue-blind)

#004D62

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b2e9e;
/* rgb */ color: rgb(27, 46, 158);
/* oklch */ color: oklch(37.4% 0.180 267.9);

Tailwind

colors: {
  custom: {
    50: '#7167bc',
    500: '#1b2e9e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e9e;
$custom-light: #7167bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e9e",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 158
  },
  "hsl": {
    "h": 231.298,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37407,
    "c": 0.18031,
    "h": 267.9
  },
  "luminance": 0.04656
}

Semantic roles & 50–950 ramp

primary

#1B2E9E

secondary

#C4B351

accent

#D43AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1B2E9E

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

Preview Lab → · Contrast checker → · Palette generator →