#1F1D9D#1F1D9D

#1F1D9D is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.0% C 0.195 H 270.9°. Best body text is #FFFFFF at 12.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D9D
RGB	rgb(31, 29, 157)
HSL	hsl(241, 69%, 36%)
HSV	hsv(241, 82%, 62%)
CMYK	cmyk(80.3%, 81.5%, 0%, 38.4%)
CIE-LAB	lab(22.32, 45.31, -67.21)
CIE-LCH	lch(22.32, 81.05, 303.99°)
OKLab	oklab(35% 0.0032 -0.1946)
OKLCH	oklch(35% 0.195 270.9)
XYZ	xyz(7.0882, 3.6036, 32.2137)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D9D #9B9D1D

analogous

#1D5B9D #1F1D9D #5F1D9D

triadic

#1F1D9D #9D1F1D #1D9D1F

tetradic

#1F1D9D #9D1D5B #9B9D1D #1D9D5F

square

#1F1D9D #9D1D5B #9B9D1D #1D9D5F

split-complementary

#1F1D9D #9D5F1D #5B9D1D

monochromatic

#0B0A36 #151369 #1F1D9D #2927D1 #5755E0

Accessibility & contrast

On white

12.20

#1F1D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1F1D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D9D

12.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D9D	#FFFFFF	#000000	##FFFFFF
##1F1D9D	1.00	12.20	1.72	12.20
#FFFFFF	12.20	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA1

Deuteranopia (green-blind)

#002F9B

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f1d9d;
/* rgb */ color: rgb(31, 29, 157);
/* oklch */ color: oklch(35.0% 0.195 270.9);

Tailwind

colors: {
  custom: {
    50: '#735cbb',
    500: '#1f1d9d',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d9d;
$custom-light: #735cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d9d",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 157
  },
  "hsl": {
    "h": 240.938,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35001,
    "c": 0.19459,
    "h": 270.9
  },
  "luminance": 0.03604
}

Semantic roles & 50–950 ramp

primary

#1F1D9D

secondary

#C1C353

accent

#EC3CE9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F1D9D

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

Preview Lab → · Contrast checker → · Palette generator →