#1D287D#1D287D

#1D287D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.0% C 0.143 H 270.5°. Best body text is #FFFFFF at 12.71:1 contrast (WCAG AA passes).

Color values

HEX	#1D287D
RGB	rgb(29, 40, 125)
HSL	hsl(233, 62%, 30%)
HSV	hsv(233, 77%, 49%)
CMYK	cmyk(76.8%, 68%, 0%, 51%)
CIE-LAB	lab(21.05, 27.21, -49.36)
CIE-LCH	lch(21.05, 56.36, 298.87°)
OKLab	oklab(33.03% 0.0011 -0.1427)
OKLCH	oklch(33.03% 0.143 270.5)
XYZ	xyz(4.9659, 3.2589, 19.7654)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D287D #7D721D

analogous

#1D587D #1D287D #421D7D

triadic

#1D287D #7D1D28 #287D1D

tetradic

#1D287D #7D1D58 #7D721D #1D7D42

square

#1D287D #7D1D58 #7D721D #1D7D42

split-complementary

#1D287D #7D421D #587D1D

monochromatic

#06081A #11184B #1D287D #2938AF #4152D3

Accessibility & contrast

On white

12.71

#1D287D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1D287D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D287D

12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D287D	#FFFFFF	#000000	##FFFFFF
##1D287D	1.00	12.71	1.65	12.71
#FFFFFF	12.71	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003780

Deuteranopia (green-blind)

#002E7B

Tritanopia (blue-blind)

#003F4E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d287d;
/* rgb */ color: rgb(29, 40, 125);
/* oklch */ color: oklch(33.0% 0.143 270.5);

Tailwind

colors: {
  custom: {
    50: '#6962a4',
    500: '#1d287d',
    950: '#000000',
  },
}

SCSS

$custom: #1d287d;
$custom-light: #6962a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d287d",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 125
  },
  "hsl": {
    "h": 233.125,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.33034,
    "c": 0.14274,
    "h": 270.5
  },
  "luminance": 0.03259
}

Semantic roles & 50–950 ramp

primary

#1D287D

secondary

#B1A445

accent

#D342E5

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D287D

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

Preview Lab → · Contrast checker → · Palette generator →