#1F1DB1#1F1DB1

#1F1DB1 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.4% C 0.218 H 269.7°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#1F1DB1
RGB	rgb(31, 29, 177)
HSL	hsl(241, 72%, 40%)
HSV	hsv(241, 84%, 69%)
CMYK	cmyk(82.5%, 83.6%, 0%, 30.6%)
CIE-LAB	lab(24.78, 51.61, -75.23)
CIE-LCH	lch(24.78, 91.23, 304.45°)
OKLab	oklab(37.41% -0.0012 -0.2178)
OKLCH	oklch(37.41% 0.218 269.7)
XYZ	xyz(8.9376, 4.3433, 41.9537)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1DB1 #AFB11D

analogous

#1D65B1 #1F1DB1 #691DB1

triadic

#1F1DB1 #B11F1D #1DB11F

tetradic

#1F1DB1 #B11D65 #AFB11D #1DB169

square

#1F1DB1 #B11D65 #AFB11D #1DB169

split-complementary

#1F1DB1 #B1691D #65B11D

monochromatic

#0D0C48 #16147C #1F1DB1 #312EDD #6563E5

Accessibility & contrast

On white

11.24

#1F1DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1F1DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1DB1

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1DB1	#FFFFFF	#000000	##FFFFFF
##1F1DB1	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B5

Deuteranopia (green-blind)

#0033AF

Tritanopia (blue-blind)

#004E69

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f1db1;
/* rgb */ color: rgb(31, 29, 177);
/* oklch */ color: oklch(37.4% 0.218 269.7);

Tailwind

colors: {
  custom: {
    50: '#795eca',
    500: '#1f1db1',
    950: '#000000',
  },
}

SCSS

$custom: #1f1db1;
$custom-light: #795eca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1db1",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 177
  },
  "hsl": {
    "h": 240.811,
    "s": 71.845,
    "l": 40.392
  },
  "oklch": {
    "l": 0.37413,
    "c": 0.21778,
    "h": 269.7
  },
  "luminance": 0.04344
}

Semantic roles & 50–950 ramp

primary

#1F1DB1

secondary

#C9CA60

accent

#EF39EC

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #1F1DB1

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

Preview Lab → · Contrast checker → · Palette generator →