#1F1A9D#1F1A9D

#1F1A9D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.7% C 0.197 H 271.1°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F1A9D
RGB	rgb(31, 26, 157)
HSL	hsl(242, 72%, 36%)
HSV	hsv(242, 83%, 62%)
CMYK	cmyk(80.3%, 83.4%, 0%, 38.4%)
CIE-LAB	lab(21.81, 46.78, -68.04)
CIE-LCH	lch(21.81, 82.57, 304.51°)
OKLab	oklab(34.65% 0.0039 -0.1969)
OKLCH	oklch(34.65% 0.197 271.1)
XYZ	xyz(7.0182, 3.4636, 32.1904)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1A9D #989D1A

analogous

#1A569D #1F1A9D #601A9D

triadic

#1F1A9D #9D1F1A #1A9D1F

tetradic

#1F1A9D #9D1A56 #989D1A #1A9D60

square

#1F1A9D #9D1A56 #989D1A #1A9D60

split-complementary

#1F1A9D #9D601A #569D1A

monochromatic

#0A0934 #151168 #1F1A9D #2923D2 #554FE2

Accessibility & contrast

On white

12.41

#1F1A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F1A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1A9D

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1A9D	#FFFFFF	#000000	##FFFFFF
##1F1A9D	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA1

Deuteranopia (green-blind)

#002D9B

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f1a9d;
/* rgb */ color: rgb(31, 26, 157);
/* oklch */ color: oklch(34.7% 0.197 271.1);

Tailwind

colors: {
  custom: {
    50: '#745bbb',
    500: '#1f1a9d',
    950: '#000000',
  },
}

SCSS

$custom: #1f1a9d;
$custom-light: #745bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1a9d",
  "rgb": {
    "r": 31,
    "g": 26,
    "b": 157
  },
  "hsl": {
    "h": 242.29,
    "s": 71.585,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34652,
    "c": 0.19696,
    "h": 271.1
  },
  "luminance": 0.03464
}

Semantic roles & 50–950 ramp

primary

#1F1A9D

secondary

#C0C44E

accent

#EE39E7

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F1A9D

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

Preview Lab → · Contrast checker → · Palette generator →