#1D236B#1D236B

#1D236B is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.3% C 0.124 H 272.8°. Best body text is #FFFFFF at 13.95:1 contrast (WCAG AA passes).

Color values

HEX	#1D236B
RGB	rgb(29, 35, 107)
HSL	hsl(235, 57%, 27%)
HSV	hsv(235, 73%, 42%)
CMYK	cmyk(72.9%, 67.3%, 0%, 58%)
CIE-LAB	lab(18.03, 23.70, -42.74)
CIE-LCH	lch(18.03, 48.87, 299.01°)
OKLab	oklab(30.29% 0.0061 -0.1234)
OKLCH	oklch(30.29% 0.124 272.8)
XYZ	xyz(3.7607, 2.5245, 14.1961)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D236B #6B651D

analogous

#1D4A6B #1D236B #3E1D6B

triadic

#1D236B #6B1D23 #236B1D

tetradic

#1D236B #6B1D4A #6B651D #1D6B3E

square

#1D236B #6B1D4A #6B651D #1D6B3E

split-complementary

#1D236B #6B3E1D #4A6B1D

monochromatic

#070818 #10133B #1D236B #2A339B #3944C9

Accessibility & contrast

On white

13.95

#1D236B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1D236B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D236B

13.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D236B	#FFFFFF	#000000	##FFFFFF
##1D236B	1.00	13.95	1.51	13.95
#FFFFFF	13.95	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00306D

Deuteranopia (green-blind)

#00296A

Tritanopia (blue-blind)

#003643

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1d236b;
/* rgb */ color: rgb(29, 35, 107);
/* oklch */ color: oklch(30.3% 0.124 272.8);

Tailwind

colors: {
  custom: {
    50: '#655e96',
    500: '#1d236b',
    950: '#000000',
  },
}

SCSS

$custom: #1d236b;
$custom-light: #655e96;
$custom-dark: #000000;

JSON

{
  "hex": "#1d236b",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 107
  },
  "hsl": {
    "h": 235.385,
    "s": 57.353,
    "l": 26.667
  },
  "oklch": {
    "l": 0.30291,
    "c": 0.12355,
    "h": 272.8
  },
  "luminance": 0.02525
}

Semantic roles & 50–950 ramp

primary

#1D236B

secondary

#A09944

accent

#D547E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #1D236B

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

Preview Lab → · Contrast checker → · Palette generator →