#1F1DA9#1F1DA9

#1F1DA9 is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.4% C 0.209 H 270.1°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#1F1DA9
RGB	rgb(31, 29, 169)
HSL	hsl(241, 71%, 39%)
HSV	hsv(241, 83%, 66%)
CMYK	cmyk(81.7%, 82.8%, 0%, 33.7%)
CIE-LAB	lab(23.78, 49.13, -72.07)
CIE-LCH	lch(23.78, 87.22, 304.28°)
OKLab	oklab(36.44% 0.0005 -0.2086)
OKLCH	oklch(36.44% 0.209 270.1)
XYZ	xyz(8.1634, 4.0337, 37.8767)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1DA9 #A7A91D

analogous

#1D61A9 #1F1DA9 #651DA9

triadic

#1F1DA9 #A91F1D #1DA91F

tetradic

#1F1DA9 #A91D61 #A7A91D #1DA965

square

#1F1DA9 #A91D61 #A7A91D #1DA965

split-complementary

#1F1DA9 #A9651D #61A91D

monochromatic

#0C0B41 #151475 #1F1DA9 #2B29DA #5F5DE3

Accessibility & contrast

On white

11.62

#1F1DA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F1DA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1DA9

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1DA9	#FFFFFF	#000000	##FFFFFF
##1F1DA9	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AD

Deuteranopia (green-blind)

#0031A7

Tritanopia (blue-blind)

#004A65

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f1da9;
/* rgb */ color: rgb(31, 29, 169);
/* oklch */ color: oklch(36.4% 0.209 270.1);

Tailwind

colors: {
  custom: {
    50: '#775dc4',
    500: '#1f1da9',
    950: '#000000',
  },
}

SCSS

$custom: #1f1da9;
$custom-light: #775dc4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1da9",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 169
  },
  "hsl": {
    "h": 240.857,
    "s": 70.707,
    "l": 38.824
  },
  "oklch": {
    "l": 0.36442,
    "c": 0.20863,
    "h": 270.1
  },
  "luminance": 0.04035
}

Semantic roles & 50–950 ramp

primary

#1F1DA9

secondary

#C6C75A

accent

#ED3AEB

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0413

muted

#7C7982

Preview Lab

Preview with #1F1DA9

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

Preview Lab → · Contrast checker → · Palette generator →