#1D236D#1D236D

#1D236D is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.5% C 0.126 H 272.7°. Best body text is #FFFFFF at 13.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D236D
RGB	rgb(29, 35, 109)
HSL	hsl(236, 58%, 27%)
HSV	hsv(236, 73%, 43%)
CMYK	cmyk(73.4%, 67.9%, 0%, 57.3%)
CIE-LAB	lab(18.22, 24.47, -43.73)
CIE-LCH	lch(18.22, 50.12, 299.23°)
OKLab	oklab(30.49% 0.0059 -0.1263)
OKLCH	oklch(30.49% 0.126 272.7)
XYZ	xyz(3.8671, 2.5670, 14.7567)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D236D #6D671D

analogous

#1D4B6D #1D236D #3F1D6D

triadic

#1D236D #6D1D23 #236D1D

tetradic

#1D236D #6D1D4B #6D671D #1D6D3F

square

#1D236D #6D1D4B #6D671D #1D6D3F

split-complementary

#1D236D #6D3F1D #4B6D1D

monochromatic

#060818 #10133D #1D236D #2A339D #3A45CB

Accessibility & contrast

On white

13.88

#1D236D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1D236D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D236D

13.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D236D	#FFFFFF	#000000	##FFFFFF
##1D236D	1.00	13.88	1.51	13.88
#FFFFFF	13.88	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00306F

Deuteranopia (green-blind)

#00296C

Tritanopia (blue-blind)

#003644

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1d236d;
/* rgb */ color: rgb(29, 35, 109);
/* oklch */ color: oklch(30.5% 0.126 272.7);

Tailwind

colors: {
  custom: {
    50: '#665e98',
    500: '#1d236d',
    950: '#000000',
  },
}

SCSS

$custom: #1d236d;
$custom-light: #665e98;
$custom-dark: #000000;

JSON

{
  "hex": "#1d236d",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 109
  },
  "hsl": {
    "h": 235.5,
    "s": 57.971,
    "l": 27.059
  },
  "oklch": {
    "l": 0.30489,
    "c": 0.12644,
    "h": 272.7
  },
  "luminance": 0.02567
}

Semantic roles & 50–950 ramp

primary

#1D236D

secondary

#A29B44

accent

#D647E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #1D236D

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

Preview Lab → · Contrast checker → · Palette generator →