#1F3696#1F3696

#1F3696 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.2% C 0.159 H 267.5°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F3696
RGB	rgb(31, 54, 150)
HSL	hsl(228, 66%, 35%)
HSV	hsv(228, 79%, 59%)
CMYK	cmyk(79.3%, 64%, 0%, 41.2%)
CIE-LAB	lab(27.10, 27.59, -55.02)
CIE-LCH	lch(27.10, 61.55, 296.63°)
OKLab	oklab(38.23% -0.0069 -0.1592)
OKLCH	oklch(38.23% 0.159 267.5)
XYZ	xyz(7.3873, 5.1308, 29.4493)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3696 #967F1F

analogous

#1F7296 #1F3696 #431F96

triadic

#1F3696 #961F36 #36961F

tetradic

#1F3696 #961F72 #967F1F #1F9643

square

#1F3696 #961F72 #967F1F #1F9643

split-complementary

#1F3696 #96431F #72961F

monochromatic

#0A1131 #152463 #1F3696 #2948C9 #546EDC

Accessibility & contrast

On white

10.36

#1F3696 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1F3696 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3696

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3696	#FFFFFF	#000000	##FFFFFF
##1F3696	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004699

Deuteranopia (green-blind)

#003B94

Tritanopia (blue-blind)

#004F61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f3696;
/* rgb */ color: rgb(31, 54, 150);
/* oklch */ color: oklch(38.2% 0.159 267.5);

Tailwind

colors: {
  custom: {
    50: '#6f6cb6',
    500: '#1f3696',
    950: '#000000',
  },
}

SCSS

$custom: #1f3696;
$custom-light: #6f6cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3696",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 150
  },
  "hsl": {
    "h": 228.403,
    "s": 65.746,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38226,
    "c": 0.15931,
    "h": 267.5
  },
  "luminance": 0.05132
}

Semantic roles & 50–950 ramp

primary

#1F3696

secondary

#BFAA52

accent

#C83FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1F3696

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

Preview Lab → · Contrast checker → · Palette generator →