#1D1FB1#1D1FB1

#1D1FB1 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.5% C 0.217 H 269.1°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#1D1FB1
RGB	rgb(29, 31, 177)
HSL	hsl(239, 72%, 40%)
HSV	hsv(239, 84%, 69%)
CMYK	cmyk(83.6%, 82.5%, 0%, 30.6%)
CIE-LAB	lab(25.00, 50.59, -74.87)
CIE-LCH	lch(25.00, 90.36, 304.05°)
OKLab	oklab(37.54% -0.0036 -0.2168)
OKLCH	oklch(37.54% 0.217 269.1)
XYZ	xyz(8.9298, 4.4144, 41.9679)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1FB1 #B1AF1D

analogous

#1D69B1 #1D1FB1 #651DB1

triadic

#1D1FB1 #B11D1F #1FB11D

tetradic

#1D1FB1 #B11D69 #B1AF1D #1DB165

square

#1D1FB1 #B11D69 #B1AF1D #1DB165

split-complementary

#1D1FB1 #B1651D #69B11D

monochromatic

#0C0D48 #14167C #1D1FB1 #2E31DD #6365E5

Accessibility & contrast

On white

11.15

#1D1FB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1D1FB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1FB1

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1FB1	#FFFFFF	#000000	##FFFFFF
##1D1FB1	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B5

Deuteranopia (green-blind)

#0033AF

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d1fb1;
/* rgb */ color: rgb(29, 31, 177);
/* oklch */ color: oklch(37.5% 0.217 269.1);

Tailwind

colors: {
  custom: {
    50: '#785fca',
    500: '#1d1fb1',
    950: '#000000',
  },
}

SCSS

$custom: #1d1fb1;
$custom-light: #785fca;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1fb1",
  "rgb": {
    "r": 29,
    "g": 31,
    "b": 177
  },
  "hsl": {
    "h": 239.189,
    "s": 71.845,
    "l": 40.392
  },
  "oklch": {
    "l": 0.37541,
    "c": 0.21682,
    "h": 269.1
  },
  "luminance": 0.04416
}

Semantic roles & 50–950 ramp

primary

#1D1FB1

secondary

#CAC960

accent

#EC39EF

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #1D1FB1

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

Preview Lab → · Contrast checker → · Palette generator →