#1F189F#1F189F

#1F189F is a dark, highly saturated blue. Relative luminance 0.034; OKLCH L 34.7% C 0.201 H 271.1°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F189F
RGB	rgb(31, 24, 159)
HSL	hsl(243, 74%, 36%)
HSV	hsv(243, 85%, 62%)
CMYK	cmyk(80.5%, 84.9%, 0%, 37.6%)
CIE-LAB	lab(21.75, 48.32, -69.37)
CIE-LCH	lch(21.75, 84.54, 304.86°)
OKLab	oklab(34.68% 0.0039 -0.2007)
OKLCH	oklch(34.68% 0.201 271.1)
XYZ	xyz(7.1476, 3.4470, 33.0828)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F189F #989F18

analogous

#18549F #1F189F #62189F

triadic

#1F189F #9F1F18 #189F1F

tetradic

#1F189F #9F1854 #989F18 #189F62

square

#1F189F #9F1854 #989F18 #189F62

split-complementary

#1F189F #9F6218 #549F18

monochromatic

#0A0835 #15106A #1F189F #2920D4 #554DE4

Accessibility & contrast

On white

12.43

#1F189F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F189F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F189F

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F189F	#FFFFFF	#000000	##FFFFFF
##1F189F	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA3

Deuteranopia (green-blind)

#002D9D

Tritanopia (blue-blind)

#00445E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f189f;
/* rgb */ color: rgb(31, 24, 159);
/* oklch */ color: oklch(34.7% 0.201 271.1);

Tailwind

colors: {
  custom: {
    50: '#745abd',
    500: '#1f189f',
    950: '#000000',
  },
}

SCSS

$custom: #1f189f;
$custom-light: #745abd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f189f",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 159
  },
  "hsl": {
    "h": 243.111,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34682,
    "c": 0.20075,
    "h": 271.1
  },
  "luminance": 0.03448
}

Semantic roles & 50–950 ramp

primary

#1F189F

secondary

#C0C64D

accent

#F037E7

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F189F

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

Preview Lab → · Contrast checker → · Palette generator →