#1F3585#1F3585

#1F3585 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.5% C 0.137 H 267.4°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#1F3585
RGB	rgb(31, 53, 133)
HSL	hsl(227, 62%, 32%)
HSV	hsv(227, 77%, 52%)
CMYK	cmyk(76.7%, 60.2%, 0%, 47.8%)
CIE-LAB	lab(25.35, 21.62, -47.36)
CIE-LCH	lch(25.35, 52.06, 294.53°)
OKLab	oklab(36.46% -0.0063 -0.1367)
OKLCH	oklch(36.46% 0.137 267.4)
XYZ	xyz(6.0703, 4.5303, 22.7403)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3585 #856F1F

analogous

#1F6885 #1F3585 #3C1F85

triadic

#1F3585 #851F35 #35851F

tetradic

#1F3585 #851F68 #856F1F #1F853C

square

#1F3585 #851F68 #856F1F #1F853C

split-complementary

#1F3585 #853C1F #68851F

monochromatic

#080D22 #132153 #1F3585 #2B49B7 #4A68D5

Accessibility & contrast

On white

11.02

#1F3585 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1F3585 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3585

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3585	#FFFFFF	#000000	##FFFFFF
##1F3585	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004188

Deuteranopia (green-blind)

#003883

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f3585;
/* rgb */ color: rgb(31, 53, 133);
/* oklch */ color: oklch(36.5% 0.137 267.4);

Tailwind

colors: {
  custom: {
    50: '#6b6ba9',
    500: '#1f3585',
    950: '#000000',
  },
}

SCSS

$custom: #1f3585;
$custom-light: #6b6ba9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3585",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 133
  },
  "hsl": {
    "h": 227.059,
    "s": 62.195,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36464,
    "c": 0.13684,
    "h": 267.4
  },
  "luminance": 0.04531
}

Semantic roles & 50–950 ramp

primary

#1F3585

secondary

#B79F49

accent

#C243E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1F3585

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

Preview Lab → · Contrast checker → · Palette generator →