#1D237E#1D237E

#1D237E is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.2% C 0.150 H 271.6°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#1D237E
RGB	rgb(29, 35, 126)
HSL	hsl(236, 63%, 30%)
HSV	hsv(236, 77%, 49%)
CMYK	cmyk(77%, 72.2%, 0%, 50.6%)
CIE-LAB	lab(19.92, 30.91, -51.86)
CIE-LCH	lch(19.92, 60.37, 300.80°)
OKLab	oklab(32.24% 0.0041 -0.15)
OKLCH	oklch(32.24% 0.15 271.6)
XYZ	xyz(4.8723, 2.9691, 20.0509)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D237E #7E781D

analogous

#1D537E #1D237E #481D7E

triadic

#1D237E #7E1D23 #237E1D

tetradic

#1D237E #7E1D53 #7E781D #1D7E48

square

#1D237E #7E1D53 #7E781D #1D7E48

split-complementary

#1D237E #7E481D #537E1D

monochromatic

#06071B #12154C #1D237E #2831B0 #424BD3

Accessibility & contrast

On white

13.17

#1D237E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1D237E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D237E

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D237E	#FFFFFF	#000000	##FFFFFF
##1D237E	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003581

Deuteranopia (green-blind)

#002B7C

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1d237e;
/* rgb */ color: rgb(29, 35, 126);
/* oklch */ color: oklch(32.2% 0.150 271.6);

Tailwind

colors: {
  custom: {
    50: '#6a5ea4',
    500: '#1d237e',
    950: '#000000',
  },
}

SCSS

$custom: #1d237e;
$custom-light: #6a5ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d237e",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 126
  },
  "hsl": {
    "h": 236.289,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.32242,
    "c": 0.15011,
    "h": 271.6
  },
  "luminance": 0.0297
}

Semantic roles & 50–950 ramp

primary

#1D237E

secondary

#B1AB45

accent

#DC42E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1D237E

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

Preview Lab → · Contrast checker → · Palette generator →