#1F236D#1F236D

#1F236D is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.6% C 0.126 H 273.8°. Best body text is #FFFFFF at 13.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F236D
RGB	rgb(31, 35, 109)
HSL	hsl(237, 56%, 27%)
HSV	hsv(237, 72%, 43%)
CMYK	cmyk(71.6%, 67.9%, 0%, 57.3%)
CIE-LAB	lab(18.35, 24.76, -43.51)
CIE-LCH	lch(18.35, 50.06, 299.64°)
OKLab	oklab(30.62% 0.0084 -0.1256)
OKLCH	oklch(30.62% 0.126 273.8)
XYZ	xyz(3.9255, 2.5971, 14.7595)
Luminance	0.0260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F236D #6D691F

analogous

#1F4A6D #1F236D #421F6D

triadic

#1F236D #6D1F23 #236D1F

tetradic

#1F236D #6D1F4A #6D691F #1F6D42

square

#1F236D #6D1F4A #6D691F #1F6D42

split-complementary

#1F236D #6D421F #4A6D1F

monochromatic

#070818 #11143D #1F236D #2D329D #3E45C8

Accessibility & contrast

On white

13.82

#1F236D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1F236D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F236D

13.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F236D	#FFFFFF	#000000	##FFFFFF
##1F236D	1.00	13.82	1.52	13.82
#FFFFFF	13.82	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00306F

Deuteranopia (green-blind)

#00296C

Tritanopia (blue-blind)

#003644

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f236d;
/* rgb */ color: rgb(31, 35, 109);
/* oklch */ color: oklch(30.6% 0.126 273.8);

Tailwind

colors: {
  custom: {
    50: '#665e98',
    500: '#1f236d',
    950: '#000000',
  },
}

SCSS

$custom: #1f236d;
$custom-light: #665e98;
$custom-dark: #000000;

JSON

{
  "hex": "#1f236d",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 109
  },
  "hsl": {
    "h": 236.923,
    "s": 55.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.30622,
    "c": 0.12587,
    "h": 273.8
  },
  "luminance": 0.02597
}

Semantic roles & 50–950 ramp

primary

#1F236D

secondary

#A19C47

accent

#D749DF

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F236D

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

Preview Lab → · Contrast checker → · Palette generator →