#1F3690#1F3690

#1F3690 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.7% C 0.151 H 267.4°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F3690
RGB	rgb(31, 54, 144)
HSL	hsl(228, 65%, 34%)
HSV	hsv(228, 78%, 56%)
CMYK	cmyk(78.5%, 62.5%, 0%, 43.5%)
CIE-LAB	lab(26.57, 25.25, -52.21)
CIE-LCH	lch(26.57, 57.99, 295.81°)
OKLab	oklab(37.67% -0.0069 -0.1509)
OKLCH	oklch(37.67% 0.151 267.4)
XYZ	xyz(6.9165, 4.9425, 26.9696)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3690 #90791F

analogous

#1F6E90 #1F3690 #411F90

triadic

#1F3690 #901F36 #36901F

tetradic

#1F3690 #901F6E #90791F #1F9041

square

#1F3690 #901F6E #90791F #1F9041

split-complementary

#1F3690 #90411F #6E901F

monochromatic

#09102B #14235E #1F3690 #2A49C2 #506CD9

Accessibility & contrast

On white

10.56

#1F3690 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#1F3690 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3690

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3690	#FFFFFF	#000000	##FFFFFF
##1F3690	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004493

Deuteranopia (green-blind)

#003A8E

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f3690;
/* rgb */ color: rgb(31, 54, 144);
/* oklch */ color: oklch(37.7% 0.151 267.4);

Tailwind

colors: {
  custom: {
    50: '#6e6cb1',
    500: '#1f3690',
    950: '#000000',
  },
}

SCSS

$custom: #1f3690;
$custom-light: #6e6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3690",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 144
  },
  "hsl": {
    "h": 227.788,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37665,
    "c": 0.15106,
    "h": 267.4
  },
  "luminance": 0.04943
}

Semantic roles & 50–950 ramp

primary

#1F3690

secondary

#BCA64E

accent

#C640E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1F3690

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

Preview Lab → · Contrast checker → · Palette generator →