#1F368F#1F368F

#1F368F is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.6% C 0.150 H 267.4°. Best body text is #FFFFFF at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#1F368F
RGB	rgb(31, 54, 143)
HSL	hsl(228, 64%, 34%)
HSV	hsv(228, 78%, 56%)
CMYK	cmyk(78.3%, 62.2%, 0%, 43.9%)
CIE-LAB	lab(26.48, 24.86, -51.73)
CIE-LCH	lch(26.48, 57.40, 295.67°)
OKLab	oklab(37.57% -0.0069 -0.1495)
OKLCH	oklch(37.57% 0.15 267.4)
XYZ	xyz(6.8404, 4.9120, 26.5689)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F368F #8F781F

analogous

#1F6E8F #1F368F #401F8F

triadic

#1F368F #8F1F36 #368F1F

tetradic

#1F368F #8F1F6E #8F781F #1F8F40

square

#1F368F #8F1F6E #8F781F #1F8F40

split-complementary

#1F368F #8F401F #6E8F1F

monochromatic

#09102A #14235D #1F368F #2A49C1 #4F6CD9

Accessibility & contrast

On white

10.59

#1F368F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1F368F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F368F

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F368F	#FFFFFF	#000000	##FFFFFF
##1F368F	1.00	10.59	1.98	10.59
#FFFFFF	10.59	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004492

Deuteranopia (green-blind)

#003A8D

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f368f;
/* rgb */ color: rgb(31, 54, 143);
/* oklch */ color: oklch(37.6% 0.150 267.4);

Tailwind

colors: {
  custom: {
    50: '#6d6cb1',
    500: '#1f368f',
    950: '#000000',
  },
}

SCSS

$custom: #1f368f;
$custom-light: #6d6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f368f",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 143
  },
  "hsl": {
    "h": 227.679,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37573,
    "c": 0.14967,
    "h": 267.4
  },
  "luminance": 0.04913
}

Semantic roles & 50–950 ramp

primary

#1F368F

secondary

#BCA54E

accent

#C540E7

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1F368F

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

Preview Lab → · Contrast checker → · Palette generator →