#1B148F#1B148F

#1B148F is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.186 H 271.2°. Best body text is #FFFFFF at 13.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B148F
RGB	rgb(27, 20, 143)
HSL	hsl(243, 75%, 32%)
HSV	hsv(243, 86%, 56%)
CMYK	cmyk(81.1%, 86%, 0%, 43.9%)
CIE-LAB	lab(18.87, 44.94, -64.29)
CIE-LCH	lch(18.87, 78.44, 304.95°)
OKLab	oklab(32.05% 0.0039 -0.186)
OKLCH	oklch(32.05% 0.186 271.2)
XYZ	xyz(5.6584, 2.7159, 26.2073)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B148F #888F14

analogous

#144A8F #1B148F #59148F

triadic

#1B148F #8F1B14 #148F1B

tetradic

#1B148F #8F144A #888F14 #148F59

square

#1B148F #8F144A #888F14 #148F59

split-complementary

#1B148F #8F5914 #4A8F14

monochromatic

#070524 #110C59 #1B148F #251CC5 #443AE3

Accessibility & contrast

On white

13.61

#1B148F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B148F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B148F

13.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B148F	#FFFFFF	#000000	##FFFFFF
##1B148F	1.00	13.61	1.54	13.61
#FFFFFF	13.61	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003492

Deuteranopia (green-blind)

#00288D

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b148f;
/* rgb */ color: rgb(27, 20, 143);
/* oklch */ color: oklch(32.0% 0.186 271.2);

Tailwind

colors: {
  custom: {
    50: '#6f56b1',
    500: '#1b148f',
    950: '#000000',
  },
}

SCSS

$custom: #1b148f;
$custom-light: #6f56b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b148f",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 143
  },
  "hsl": {
    "h": 243.415,
    "s": 75.46,
    "l": 31.961
  },
  "oklch": {
    "l": 0.3205,
    "c": 0.18605,
    "h": 271.2
  },
  "luminance": 0.02716
}

Semantic roles & 50–950 ramp

primary

#1B148F

secondary

#BBC33C

accent

#F236E7

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B148F

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

Preview Lab → · Contrast checker → · Palette generator →