#1F238C#1F238C

#1F238C is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.168 H 271.5°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F238C
RGB	rgb(31, 35, 140)
HSL	hsl(238, 64%, 34%)
HSV	hsv(238, 78%, 55%)
CMYK	cmyk(77.9%, 75%, 0%, 45.1%)
CIE-LAB	lab(21.53, 36.19, -58.01)
CIE-LCH	lch(21.53, 68.37, 301.96°)
OKLab	oklab(33.87% 0.0043 -0.1679)
OKLCH	oklch(33.87% 0.168 271.5)
XYZ	xyz(5.8981, 3.3862, 25.1486)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F238C #8C881F

analogous

#1F598C #1F238C #511F8C

triadic

#1F238C #8C1F23 #238C1F

tetradic

#1F238C #8C1F59 #8C881F #1F8C51

square

#1F238C #8C1F59 #8C881F #1F8C51

split-complementary

#1F238C #8C511F #598C1F

monochromatic

#090A28 #14165A #1F238C #2A30BE #4E53D8

Accessibility & contrast

On white

12.52

#1F238C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F238C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F238C

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F238C	#FFFFFF	#000000	##FFFFFF
##1F238C	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398F

Deuteranopia (green-blind)

#002E8A

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f238c;
/* rgb */ color: rgb(31, 35, 140);
/* oklch */ color: oklch(33.9% 0.168 271.5);

Tailwind

colors: {
  custom: {
    50: '#6e5faf',
    500: '#1f238c',
    950: '#000000',
  },
}

SCSS

$custom: #1f238c;
$custom-light: #6e5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f238c",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 140
  },
  "hsl": {
    "h": 237.798,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33874,
    "c": 0.16798,
    "h": 271.5
  },
  "luminance": 0.03387
}

Semantic roles & 50–950 ramp

primary

#1F238C

secondary

#BBB74C

accent

#E141E7

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F238C

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

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