#1F3596#1F3596

#1F3596 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.0% C 0.161 H 267.7°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F3596
RGB	rgb(31, 53, 150)
HSL	hsl(229, 66%, 35%)
HSV	hsv(229, 79%, 59%)
CMYK	cmyk(79.3%, 64.7%, 0%, 41.2%)
CIE-LAB	lab(26.84, 28.26, -55.45)
CIE-LCH	lch(26.84, 62.23, 297.01°)
OKLab	oklab(38.03% -0.0063 -0.1604)
OKLCH	oklch(38.03% 0.161 267.7)
XYZ	xyz(7.3413, 5.0387, 29.4339)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3596 #96801F

analogous

#1F7096 #1F3596 #451F96

triadic

#1F3596 #961F35 #35961F

tetradic

#1F3596 #961F70 #96801F #1F9645

square

#1F3596 #961F70 #96801F #1F9645

split-complementary

#1F3596 #96451F #70961F

monochromatic

#0A1131 #152363 #1F3596 #2947C9 #546DDC

Accessibility & contrast

On white

10.46

#1F3596 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1F3596 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3596

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3596	#FFFFFF	#000000	##FFFFFF
##1F3596	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004599

Deuteranopia (green-blind)

#003A94

Tritanopia (blue-blind)

#004E60

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f3596;
/* rgb */ color: rgb(31, 53, 150);
/* oklch */ color: oklch(38.0% 0.161 267.7);

Tailwind

colors: {
  custom: {
    50: '#6f6cb6',
    500: '#1f3596',
    950: '#000000',
  },
}

SCSS

$custom: #1f3596;
$custom-light: #6f6cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3596",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 150
  },
  "hsl": {
    "h": 228.908,
    "s": 65.746,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38034,
    "c": 0.16053,
    "h": 267.7
  },
  "luminance": 0.0504
}

Semantic roles & 50–950 ramp

primary

#1F3596

secondary

#BFAB52

accent

#C93FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1F3596

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

Preview Lab → · Contrast checker → · Palette generator →