#1B2F9E#1B2F9E

#1B2F9E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.6% C 0.179 H 267.7°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F9E
RGB	rgb(27, 47, 158)
HSL	hsl(231, 71%, 36%)
HSV	hsv(231, 83%, 62%)
CMYK	cmyk(82.9%, 70.3%, 0%, 38%)
CIE-LAB	lab(25.96, 34.89, -61.79)
CIE-LCH	lch(25.96, 70.96, 299.45°)
OKLab	oklab(37.58% -0.0072 -0.179)
OKLCH	oklch(37.58% 0.179 267.7)
XYZ	xyz(7.6379, 4.7338, 32.8523)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F9E #9E8A1B

analogous

#1B719E #1B2F9E #491B9E

triadic

#1B2F9E #9E1B2F #2F9E1B

tetradic

#1B2F9E #9E1B71 #9E8A1B #1B9E49

square

#1B2F9E #9E1B71 #9E8A1B #1B9E49

split-complementary

#1B2F9E #9E491B #719E1B

monochromatic

#091035 #121F6A #1B2F9E #243FD2 #5268E1

Accessibility & contrast

On white

10.79

#1B2F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1B2F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F9E

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F9E	#FFFFFF	#000000	##FFFFFF
##1B2F9E	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A1

Deuteranopia (green-blind)

#00379C

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b2f9e;
/* rgb */ color: rgb(27, 47, 158);
/* oklch */ color: oklch(37.6% 0.179 267.7);

Tailwind

colors: {
  custom: {
    50: '#7168bc',
    500: '#1b2f9e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f9e;
$custom-light: #7168bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f9e",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 158
  },
  "hsl": {
    "h": 230.84,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37577,
    "c": 0.17919,
    "h": 267.7
  },
  "luminance": 0.04735
}

Semantic roles & 50–950 ramp

primary

#1B2F9E

secondary

#C4B351

accent

#D23AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1B2F9E

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

Preview Lab → · Contrast checker → · Palette generator →