#1F1A9E#1F1A9E

#1F1A9E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.8% C 0.198 H 271.1°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F1A9E
RGB	rgb(31, 26, 158)
HSL	hsl(242, 72%, 36%)
HSV	hsv(242, 84%, 62%)
CMYK	cmyk(80.4%, 83.5%, 0%, 38%)
CIE-LAB	lab(21.94, 47.09, -68.45)
CIE-LCH	lch(21.94, 83.08, 304.53°)
OKLab	oklab(34.77% 0.0037 -0.1981)
OKLCH	oklch(34.77% 0.198 271.1)
XYZ	xyz(7.1039, 3.4979, 32.6419)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1A9E #999E1A

analogous

#1A579E #1F1A9E #611A9E

triadic

#1F1A9E #9E1F1A #1A9E1F

tetradic

#1F1A9E #9E1A57 #999E1A #1A9E61

square

#1F1A9E #9E1A57 #999E1A #1A9E61

split-complementary

#1F1A9E #9E611A #579E1A

monochromatic

#0A0935 #151169 #1F1A9E #2923D3 #5650E2

Accessibility & contrast

On white

12.35

#1F1A9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F1A9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1A9E

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1A9E	#FFFFFF	#000000	##FFFFFF
##1F1A9E	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA2

Deuteranopia (green-blind)

#002E9C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f1a9e;
/* rgb */ color: rgb(31, 26, 158);
/* oklch */ color: oklch(34.8% 0.198 271.1);

Tailwind

colors: {
  custom: {
    50: '#745bbc',
    500: '#1f1a9e',
    950: '#000000',
  },
}

SCSS

$custom: #1f1a9e;
$custom-light: #745bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1a9e",
  "rgb": {
    "r": 31,
    "g": 26,
    "b": 158
  },
  "hsl": {
    "h": 242.273,
    "s": 71.739,
    "l": 36.078
  },
  "oklch": {
    "l": 0.34774,
    "c": 0.19812,
    "h": 271.1
  },
  "luminance": 0.03499
}

Semantic roles & 50–950 ramp

primary

#1F1A9E

secondary

#C0C54F

accent

#EE39E8

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F1A9E

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

Preview Lab → · Contrast checker → · Palette generator →