#1D238E#1D238E

#1D238E is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.0% C 0.171 H 270.6°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#1D238E
RGB	rgb(29, 35, 142)
HSL	hsl(237, 66%, 34%)
HSV	hsv(237, 80%, 56%)
CMYK	cmyk(79.6%, 75.4%, 0%, 44.3%)
CIE-LAB	lab(21.64, 36.73, -59.08)
CIE-LCH	lch(21.64, 69.56, 301.87°)
OKLab	oklab(33.99% 0.0018 -0.1711)
OKLCH	oklch(33.99% 0.171 270.6)
XYZ	xyz(5.9886, 3.4156, 25.9296)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D238E #8E881D

analogous

#1D5B8E #1D238E #4F1D8E

triadic

#1D238E #8E1D23 #238E1D

tetradic

#1D238E #8E1D5B #8E881D #1D8E4F

square

#1D238E #8E1D5B #8E881D #1D8E4F

split-complementary

#1D238E #8E4F1D #5B8E1D

monochromatic

#080A28 #13165B #1D238E #2730C1 #4B53DA

Accessibility & contrast

On white

12.48

#1D238E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1D238E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D238E

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D238E	#FFFFFF	#000000	##FFFFFF
##1D238E	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003991

Deuteranopia (green-blind)

#002E8C

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1d238e;
/* rgb */ color: rgb(29, 35, 142);
/* oklch */ color: oklch(34.0% 0.171 270.6);

Tailwind

colors: {
  custom: {
    50: '#6e5fb0',
    500: '#1d238e',
    950: '#000000',
  },
}

SCSS

$custom: #1d238e;
$custom-light: #6e5fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d238e",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 142
  },
  "hsl": {
    "h": 236.814,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33986,
    "c": 0.17109,
    "h": 270.6
  },
  "luminance": 0.03416
}

Semantic roles & 50–950 ramp

primary

#1D238E

secondary

#BDB74A

accent

#E03FE9

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1D238E

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

Preview Lab → · Contrast checker → · Palette generator →