#1D238C#1D238C

#1D238C is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.8% C 0.169 H 270.7°. Best body text is #FFFFFF at 12.56:1 contrast (WCAG AA passes).

Color values

HEX	#1D238C
RGB	rgb(29, 35, 140)
HSL	hsl(237, 66%, 33%)
HSV	hsv(237, 79%, 55%)
CMYK	cmyk(79.3%, 75%, 0%, 45.1%)
CIE-LAB	lab(21.42, 36.02, -58.19)
CIE-LCH	lch(21.42, 68.44, 301.75°)
OKLab	oklab(33.76% 0.0021 -0.1685)
OKLCH	oklch(33.76% 0.169 270.7)
XYZ	xyz(5.8397, 3.3561, 25.1459)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D238C #8C861D

analogous

#1D5A8C #1D238C #4E1D8C

triadic

#1D238C #8C1D23 #238C1D

tetradic

#1D238C #8C1D5A #8C861D #1D8C4E

square

#1D238C #8C1D5A #8C861D #1D8C4E

split-complementary

#1D238C #8C4E1D #5A8C1D

monochromatic

#080A27 #121659 #1D238C #2830BF #4A52D9

Accessibility & contrast

On white

12.56

#1D238C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1D238C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D238C

12.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D238C	#FFFFFF	#000000	##FFFFFF
##1D238C	1.00	12.56	1.67	12.56
#FFFFFF	12.56	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398F

Deuteranopia (green-blind)

#002E8A

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d238c;
/* rgb */ color: rgb(29, 35, 140);
/* oklch */ color: oklch(33.8% 0.169 270.7);

Tailwind

colors: {
  custom: {
    50: '#6e5faf',
    500: '#1d238c',
    950: '#000000',
  },
}

SCSS

$custom: #1d238c;
$custom-light: #6e5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d238c",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 140
  },
  "hsl": {
    "h": 236.757,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33764,
    "c": 0.16852,
    "h": 270.7
  },
  "luminance": 0.03357
}

Semantic roles & 50–950 ramp

primary

#1D238C

secondary

#BCB549

accent

#DF3FE9

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D238C

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

Preview Lab → · Contrast checker → · Palette generator →