#1F1DB3#1F1DB3

#1F1DB3 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.7% C 0.220 H 269.6°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#1F1DB3
RGB	rgb(31, 29, 179)
HSL	hsl(241, 72%, 41%)
HSV	hsv(241, 84%, 70%)
CMYK	cmyk(82.7%, 83.8%, 0%, 29.8%)
CIE-LAB	lab(25.03, 52.23, -76.01)
CIE-LCH	lch(25.03, 92.23, 304.49°)
OKLab	oklab(37.66% -0.0016 -0.22)
OKLCH	oklch(37.66% 0.22 269.6)
XYZ	xyz(9.1384, 4.4236, 43.0113)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1DB3 #B1B31D

analogous

#1D66B3 #1F1DB3 #6A1DB3

triadic

#1F1DB3 #B31F1D #1DB31F

tetradic

#1F1DB3 #B31D66 #B1B31D #1DB36A

square

#1F1DB3 #B31D66 #B1B31D #1DB36A

split-complementary

#1F1DB3 #B36A1D #66B31D

monochromatic

#0D0C4A #16147E #1F1DB3 #3230DD #6664E6

Accessibility & contrast

On white

11.14

#1F1DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1F1DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1DB3

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1DB3	#FFFFFF	#000000	##FFFFFF
##1F1DB3	1.00	11.14	1.89	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B7

Deuteranopia (green-blind)

#0033B1

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f1db3;
/* rgb */ color: rgb(31, 29, 179);
/* oklch */ color: oklch(37.7% 0.220 269.6);

Tailwind

colors: {
  custom: {
    50: '#795ecb',
    500: '#1f1db3',
    950: '#000000',
  },
}

SCSS

$custom: #1f1db3;
$custom-light: #795ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1db3",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 179
  },
  "hsl": {
    "h": 240.8,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.37657,
    "c": 0.22005,
    "h": 269.6
  },
  "luminance": 0.04425
}

Semantic roles & 50–950 ramp

primary

#1F1DB3

secondary

#CACB61

accent

#EF39EC

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #1F1DB3

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

Preview Lab → · Contrast checker → · Palette generator →