#1F236F#1F236F

#1F236F is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.129 H 273.7°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F236F
RGB	rgb(31, 35, 111)
HSL	hsl(237, 56%, 28%)
HSV	hsv(237, 72%, 44%)
CMYK	cmyk(72.1%, 68.5%, 0%, 56.5%)
CIE-LAB	lab(18.54, 25.52, -44.49)
CIE-LCH	lch(18.54, 51.29, 299.84°)
OKLab	oklab(30.82% 0.0082 -0.1285)
OKLCH	oklch(30.82% 0.129 273.7)
XYZ	xyz(4.0344, 2.6407, 15.3329)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F236F #6F6B1F

analogous

#1F4B6F #1F236F #431F6F

triadic

#1F236F #6F1F23 #236F1F

tetradic

#1F236F #6F1F4B #6F6B1F #1F6F43

square

#1F236F #6F1F4B #6F6B1F #1F6F43

split-complementary

#1F236F #6F431F #4B6F1F

monochromatic

#070818 #12143F #1F236F #2C329F #3F46C9

Accessibility & contrast

On white

13.74

#1F236F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F236F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F236F

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F236F	#FFFFFF	#000000	##FFFFFF
##1F236F	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003171

Deuteranopia (green-blind)

#002A6E

Tritanopia (blue-blind)

#003745

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f236f;
/* rgb */ color: rgb(31, 35, 111);
/* oklch */ color: oklch(30.8% 0.129 273.7);

Tailwind

colors: {
  custom: {
    50: '#675e99',
    500: '#1f236f',
    950: '#000000',
  },
}

SCSS

$custom: #1f236f;
$custom-light: #675e99;
$custom-dark: #000000;

JSON

{
  "hex": "#1f236f",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 111
  },
  "hsl": {
    "h": 237,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.3082,
    "c": 0.12874,
    "h": 273.7
  },
  "luminance": 0.02641
}

Semantic roles & 50–950 ramp

primary

#1F236F

secondary

#A39E47

accent

#D848E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F236F

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

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