#1D2879#1D2879

#1D2879 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.6% C 0.137 H 270.6°. Best body text is #FFFFFF at 12.87:1 contrast (WCAG AA passes).

Color values

HEX	#1D2879
RGB	rgb(29, 40, 121)
HSL	hsl(233, 61%, 29%)
HSV	hsv(233, 76%, 47%)
CMYK	cmyk(76%, 66.9%, 0%, 52.5%)
CIE-LAB	lab(20.67, 25.67, -47.44)
CIE-LCH	lch(20.67, 53.94, 298.41°)
OKLab	oklab(32.64% 0.0014 -0.1371)
OKLCH	oklch(32.64% 0.137 270.6)
XYZ	xyz(4.7155, 3.1588, 18.4466)
Luminance	0.0316 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2879 #796E1D

analogous

#1D5679 #1D2879 #401D79

triadic

#1D2879 #791D28 #28791D

tetradic

#1D2879 #791D56 #796E1D #1D7940

square

#1D2879 #791D56 #796E1D #1D7940

split-complementary

#1D2879 #79401D #56791D

monochromatic

#060819 #111848 #1D2879 #2938AA #3F51D1

Accessibility & contrast

On white

12.87

#1D2879 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1D2879 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2879

12.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2879	#FFFFFF	#000000	##FFFFFF
##1D2879	1.00	12.87	1.63	12.87
#FFFFFF	12.87	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367C

Deuteranopia (green-blind)

#002D77

Tritanopia (blue-blind)

#003D4C

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d2879;
/* rgb */ color: rgb(29, 40, 121);
/* oklch */ color: oklch(32.6% 0.137 270.6);

Tailwind

colors: {
  custom: {
    50: '#6862a1',
    500: '#1d2879',
    950: '#000000',
  },
}

SCSS

$custom: #1d2879;
$custom-light: #6862a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2879",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 121
  },
  "hsl": {
    "h": 232.826,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32635,
    "c": 0.13714,
    "h": 270.6
  },
  "luminance": 0.03159
}

Semantic roles & 50–950 ramp

primary

#1D2879

secondary

#ADA045

accent

#D143E4

background

#F6F5FA

surface

#ECEAF3

border

#C7C6CD

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D2879

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

Preview Lab → · Contrast checker → · Palette generator →