#1F1D9E#1F1D9E

#1F1D9E is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.1% C 0.196 H 270.9°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D9E
RGB	rgb(31, 29, 158)
HSL	hsl(241, 69%, 37%)
HSV	hsv(241, 82%, 62%)
CMYK	cmyk(80.4%, 81.6%, 0%, 38%)
CIE-LAB	lab(22.44, 45.63, -67.62)
CIE-LCH	lch(22.44, 81.58, 304.01°)
OKLab	oklab(35.12% 0.003 -0.1957)
OKLCH	oklch(35.12% 0.196 270.9)
XYZ	xyz(7.1739, 3.6378, 32.6652)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D9E #9C9E1D

analogous

#1D5C9E #1F1D9E #601D9E

triadic

#1F1D9E #9E1F1D #1D9E1F

tetradic

#1F1D9E #9E1D5C #9C9E1D #1D9E60

square

#1F1D9E #9E1D5C #9C9E1D #1D9E60

split-complementary

#1F1D9E #9E601D #5C9E1D

monochromatic

#0B0A37 #15146A #1F1D9E #2926D2 #5856E0

Accessibility & contrast

On white

12.15

#1F1D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F1D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D9E

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D9E	#FFFFFF	#000000	##FFFFFF
##1F1D9E	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA2

Deuteranopia (green-blind)

#002F9C

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f1d9e;
/* rgb */ color: rgb(31, 29, 158);
/* oklch */ color: oklch(35.1% 0.196 270.9);

Tailwind

colors: {
  custom: {
    50: '#745cbc',
    500: '#1f1d9e',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d9e;
$custom-light: #745cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d9e",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 158
  },
  "hsl": {
    "h": 240.93,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.3512,
    "c": 0.19577,
    "h": 270.9
  },
  "luminance": 0.03639
}

Semantic roles & 50–950 ramp

primary

#1F1D9E

secondary

#C1C354

accent

#EC3CE9

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F1D9E

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

Preview Lab → · Contrast checker → · Palette generator →