#1F3485#1F3485

#1F3485 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.138 H 267.7°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#1F3485
RGB	rgb(31, 52, 133)
HSL	hsl(228, 62%, 32%)
HSV	hsv(228, 77%, 52%)
CMYK	cmyk(76.7%, 60.9%, 0%, 47.8%)
CIE-LAB	lab(25.08, 22.31, -47.81)
CIE-LCH	lch(25.08, 52.76, 295.02°)
OKLab	oklab(36.26% -0.0055 -0.138)
OKLCH	oklch(36.26% 0.138 267.7)
XYZ	xyz(6.0252, 4.4401, 22.7252)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3485 #85701F

analogous

#1F6785 #1F3485 #3D1F85

triadic

#1F3485 #851F34 #34851F

tetradic

#1F3485 #851F67 #85701F #1F853D

square

#1F3485 #851F67 #85701F #1F853D

split-complementary

#1F3485 #853D1F #67851F

monochromatic

#080D22 #132153 #1F3485 #2B47B7 #4A66D5

Accessibility & contrast

On white

11.12

#1F3485 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1F3485 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3485

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3485	#FFFFFF	#000000	##FFFFFF
##1F3485	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004088

Deuteranopia (green-blind)

#003783

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f3485;
/* rgb */ color: rgb(31, 52, 133);
/* oklch */ color: oklch(36.3% 0.138 267.7);

Tailwind

colors: {
  custom: {
    50: '#6b6ba9',
    500: '#1f3485',
    950: '#000000',
  },
}

SCSS

$custom: #1f3485;
$custom-light: #6b6ba9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3485",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 133
  },
  "hsl": {
    "h": 227.647,
    "s": 62.195,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36258,
    "c": 0.13815,
    "h": 267.7
  },
  "luminance": 0.04441
}

Semantic roles & 50–950 ramp

primary

#1F3485

secondary

#B7A049

accent

#C443E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1F3485

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

Preview Lab → · Contrast checker → · Palette generator →