#1F3697#1F3697

#1F3697 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.3% C 0.161 H 267.5°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F3697
RGB	rgb(31, 54, 151)
HSL	hsl(229, 66%, 36%)
HSV	hsv(229, 79%, 59%)
CMYK	cmyk(79.5%, 64.2%, 0%, 40.8%)
CIE-LAB	lab(27.19, 27.97, -55.49)
CIE-LCH	lch(27.19, 62.14, 296.75°)
OKLab	oklab(38.32% -0.0069 -0.1605)
OKLCH	oklch(38.32% 0.161 267.5)
XYZ	xyz(7.4682, 5.1632, 29.8751)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3697 #97801F

analogous

#1F7297 #1F3697 #441F97

triadic

#1F3697 #971F36 #36971F

tetradic

#1F3697 #971F72 #97801F #1F9744

square

#1F3697 #971F72 #97801F #1F9744

split-complementary

#1F3697 #97441F #72971F

monochromatic

#0A1231 #152464 #1F3697 #2948CA #546EDC

Accessibility & contrast

On white

10.33

#1F3697 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1F3697 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3697

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3697	#FFFFFF	#000000	##FFFFFF
##1F3697	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469A

Deuteranopia (green-blind)

#003B95

Tritanopia (blue-blind)

#004F61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f3697;
/* rgb */ color: rgb(31, 54, 151);
/* oklch */ color: oklch(38.3% 0.161 267.5);

Tailwind

colors: {
  custom: {
    50: '#6f6cb6',
    500: '#1f3697',
    950: '#000000',
  },
}

SCSS

$custom: #1f3697;
$custom-light: #6f6cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3697",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 151
  },
  "hsl": {
    "h": 228.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.3832,
    "c": 0.16067,
    "h": 267.5
  },
  "luminance": 0.05164
}

Semantic roles & 50–950 ramp

primary

#1F3697

secondary

#BFAB52

accent

#C83FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1F3697

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

Preview Lab → · Contrast checker → · Palette generator →