#1D287E#1D287E

#1D287E is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.1% C 0.144 H 270.4°. Best body text is #FFFFFF at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D287E
RGB	rgb(29, 40, 126)
HSL	hsl(233, 63%, 30%)
HSV	hsv(233, 77%, 49%)
CMYK	cmyk(77%, 68.3%, 0%, 50.6%)
CIE-LAB	lab(21.15, 27.60, -49.83)
CIE-LCH	lch(21.15, 56.96, 298.98°)
OKLab	oklab(33.13% 0.0011 -0.1441)
OKLCH	oklch(33.13% 0.144 270.4)
XYZ	xyz(5.0301, 3.2846, 20.1035)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D287E #7E731D

analogous

#1D587E #1D287E #421D7E

triadic

#1D287E #7E1D28 #287E1D

tetradic

#1D287E #7E1D58 #7E731D #1D7E42

square

#1D287E #7E1D58 #7E731D #1D7E42

split-complementary

#1D287E #7E421D #587E1D

monochromatic

#06081B #12184C #1D287E #2838B0 #4252D3

Accessibility & contrast

On white

12.67

#1D287E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1D287E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D287E

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D287E	#FFFFFF	#000000	##FFFFFF
##1D287E	1.00	12.67	1.66	12.67
#FFFFFF	12.67	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#002E7C

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d287e;
/* rgb */ color: rgb(29, 40, 126);
/* oklch */ color: oklch(33.1% 0.144 270.4);

Tailwind

colors: {
  custom: {
    50: '#6962a4',
    500: '#1d287e',
    950: '#000000',
  },
}

SCSS

$custom: #1d287e;
$custom-light: #6962a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d287e",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 126
  },
  "hsl": {
    "h": 233.196,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.33134,
    "c": 0.14413,
    "h": 270.4
  },
  "luminance": 0.03285
}

Semantic roles & 50–950 ramp

primary

#1D287E

secondary

#B1A545

accent

#D342E6

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D287E

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

Preview Lab → · Contrast checker → · Palette generator →