#1F1D9C#1F1D9C

#1F1D9C is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.9% C 0.193 H 271.0°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D9C
RGB	rgb(31, 29, 156)
HSL	hsl(241, 69%, 36%)
HSV	hsv(241, 81%, 61%)
CMYK	cmyk(80.1%, 81.4%, 0%, 38.8%)
CIE-LAB	lab(22.19, 44.99, -66.80)
CIE-LCH	lch(22.19, 80.53, 303.96°)
OKLab	oklab(34.88% 0.0034 -0.1934)
OKLCH	oklch(34.88% 0.193 271)
XYZ	xyz(7.0032, 3.5695, 31.7659)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D9C #9A9C1D

analogous

#1D5B9C #1F1D9C #5F1D9C

triadic

#1F1D9C #9C1F1D #1D9C1F

tetradic

#1F1D9C #9C1D5B #9A9C1D #1D9C5F

square

#1F1D9C #9C1D5B #9A9C1D #1D9C5F

split-complementary

#1F1D9C #9C5F1D #5B9C1D

monochromatic

#0A0A35 #151368 #1F1D9C #2927D0 #5654DF

Accessibility & contrast

On white

12.25

#1F1D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1F1D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D9C

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D9C	#FFFFFF	#000000	##FFFFFF
##1F1D9C	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9F

Deuteranopia (green-blind)

#002E9A

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f1d9c;
/* rgb */ color: rgb(31, 29, 156);
/* oklch */ color: oklch(34.9% 0.193 271.0);

Tailwind

colors: {
  custom: {
    50: '#735cbb',
    500: '#1f1d9c',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d9c;
$custom-light: #735cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d9c",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 156
  },
  "hsl": {
    "h": 240.945,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.34882,
    "c": 0.19339,
    "h": 271
  },
  "luminance": 0.0357
}

Semantic roles & 50–950 ramp

primary

#1F1D9C

secondary

#C1C252

accent

#EB3CE9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F1D9C

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

Preview Lab → · Contrast checker → · Palette generator →