#1D238A#1D238A

#1D238A is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.5% C 0.166 H 270.8°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#1D238A
RGB	rgb(29, 35, 138)
HSL	hsl(237, 65%, 33%)
HSV	hsv(237, 79%, 54%)
CMYK	cmyk(79%, 74.6%, 0%, 45.9%)
CIE-LAB	lab(21.20, 35.30, -57.31)
CIE-LCH	lch(21.20, 67.31, 301.63°)
OKLab	oklab(33.54% 0.0024 -0.1659)
OKLCH	oklch(33.54% 0.166 270.8)
XYZ	xyz(5.6936, 3.2976, 24.3763)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D238A #8A841D

analogous

#1D5A8A #1D238A #4D1D8A

triadic

#1D238A #8A1D23 #238A1D

tetradic

#1D238A #8A1D5A #8A841D #1D8A4D

square

#1D238A #8A1D5A #8A841D #1D8A4D

split-complementary

#1D238A #8A4D1D #5A8A1D

monochromatic

#080925 #121657 #1D238A #2830BD #4951D9

Accessibility & contrast

On white

12.65

#1D238A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1D238A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D238A

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D238A	#FFFFFF	#000000	##FFFFFF
##1D238A	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388D

Deuteranopia (green-blind)

#002E88

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d238a;
/* rgb */ color: rgb(29, 35, 138);
/* oklch */ color: oklch(33.5% 0.166 270.8);

Tailwind

colors: {
  custom: {
    50: '#6d5fad',
    500: '#1d238a',
    950: '#000000',
  },
}

SCSS

$custom: #1d238a;
$custom-light: #6d5fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d238a",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 138
  },
  "hsl": {
    "h": 236.697,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33543,
    "c": 0.16595,
    "h": 270.8
  },
  "luminance": 0.03298
}

Semantic roles & 50–950 ramp

primary

#1D238A

secondary

#BBB448

accent

#DF40E8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D238A

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

Preview Lab → · Contrast checker → · Palette generator →