#1D2379#1D2379

#1D2379 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.143 H 271.9°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#1D2379
RGB	rgb(29, 35, 121)
HSL	hsl(236, 61%, 29%)
HSV	hsv(236, 76%, 47%)
CMYK	cmyk(76%, 71.1%, 0%, 52.5%)
CIE-LAB	lab(19.41, 29.04, -49.52)
CIE-LCH	lch(19.41, 57.41, 300.39°)
OKLab	oklab(31.71% 0.0047 -0.1432)
OKLCH	oklch(31.71% 0.143 271.9)
XYZ	xyz(4.5578, 2.8433, 18.3941)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2379 #79731D

analogous

#1D5179 #1D2379 #451D79

triadic

#1D2379 #791D23 #23791D

tetradic

#1D2379 #791D51 #79731D #1D7945

square

#1D2379 #791D51 #79731D #1D7945

split-complementary

#1D2379 #79451D #51791D

monochromatic

#060719 #111548 #1D2379 #2931AA #3F49D1

Accessibility & contrast

On white

13.39

#1D2379 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1D2379 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2379

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2379	#FFFFFF	#000000	##FFFFFF
##1D2379	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337C

Deuteranopia (green-blind)

#002B77

Tritanopia (blue-blind)

#003A4B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1d2379;
/* rgb */ color: rgb(29, 35, 121);
/* oklch */ color: oklch(31.7% 0.143 271.9);

Tailwind

colors: {
  custom: {
    50: '#695ea1',
    500: '#1d2379',
    950: '#000000',
  },
}

SCSS

$custom: #1d2379;
$custom-light: #695ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2379",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 121
  },
  "hsl": {
    "h": 236.087,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.31714,
    "c": 0.1433,
    "h": 271.9
  },
  "luminance": 0.02844
}

Semantic roles & 50–950 ramp

primary

#1D2379

secondary

#ADA645

accent

#DA43E4

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1D2379

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

Preview Lab → · Contrast checker → · Palette generator →