#1D2783#1D2783

#1D2783 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.5% C 0.152 H 270.5°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#1D2783
RGB	rgb(29, 39, 131)
HSL	hsl(234, 64%, 31%)
HSV	hsv(234, 78%, 51%)
CMYK	cmyk(77.9%, 70.2%, 0%, 48.6%)
CIE-LAB	lab(21.40, 30.16, -52.59)
CIE-LCH	lch(21.40, 60.62, 299.84°)
OKLab	oklab(33.46% 0.0012 -0.1522)
OKLCH	oklch(33.46% 0.152 270.5)
XYZ	xyz(5.3276, 3.3504, 21.8342)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2783 #83791D

analogous

#1D5A83 #1D2783 #461D83

triadic

#1D2783 #831D27 #27831D

tetradic

#1D2783 #831D5A #83791D #1D8346

square

#1D2783 #831D5A #83791D #1D8346

split-complementary

#1D2783 #83461D #5A831D

monochromatic

#07091F #121851 #1D2783 #2836B5 #4553D6

Accessibility & contrast

On white

12.57

#1D2783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1D2783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2783

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2783	#FFFFFF	#000000	##FFFFFF
##1D2783	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003886

Deuteranopia (green-blind)

#002E81

Tritanopia (blue-blind)

#004051

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d2783;
/* rgb */ color: rgb(29, 39, 131);
/* oklch */ color: oklch(33.5% 0.152 270.5);

Tailwind

colors: {
  custom: {
    50: '#6b61a8',
    500: '#1d2783',
    950: '#000000',
  },
}

SCSS

$custom: #1d2783;
$custom-light: #6b61a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2783",
  "rgb": {
    "r": 29,
    "g": 39,
    "b": 131
  },
  "hsl": {
    "h": 234.118,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.33464,
    "c": 0.15218,
    "h": 270.5
  },
  "luminance": 0.03351
}

Semantic roles & 50–950 ramp

primary

#1D2783

secondary

#B6AB46

accent

#D741E7

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1D2783

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

Preview Lab → · Contrast checker → · Palette generator →