#1F3685#1F3685

#1F3685 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.136 H 267.0°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F3685
RGB	rgb(31, 54, 133)
HSL	hsl(226, 62%, 32%)
HSV	hsv(226, 77%, 52%)
CMYK	cmyk(76.7%, 59.4%, 0%, 47.8%)
CIE-LAB	lab(25.63, 20.92, -46.91)
CIE-LCH	lch(25.63, 51.37, 294.04°)
OKLab	oklab(36.67% -0.007 -0.1354)
OKLCH	oklch(36.67% 0.136 267)
XYZ	xyz(6.1164, 4.6224, 22.7556)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3685 #856E1F

analogous

#1F6985 #1F3685 #3B1F85

triadic

#1F3685 #851F36 #36851F

tetradic

#1F3685 #851F69 #856E1F #1F853B

square

#1F3685 #851F69 #856E1F #1F853B

split-complementary

#1F3685 #853B1F #69851F

monochromatic

#080E22 #132253 #1F3685 #2B4AB7 #4A69D5

Accessibility & contrast

On white

10.91

#1F3685 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1F3685 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3685

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3685	#FFFFFF	#000000	##FFFFFF
##1F3685	1.00	10.91	1.92	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004288

Deuteranopia (green-blind)

#003883

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f3685;
/* rgb */ color: rgb(31, 54, 133);
/* oklch */ color: oklch(36.7% 0.136 267.0);

Tailwind

colors: {
  custom: {
    50: '#6b6ca9',
    500: '#1f3685',
    950: '#000000',
  },
}

SCSS

$custom: #1f3685;
$custom-light: #6b6ca9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3685",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 133
  },
  "hsl": {
    "h": 226.471,
    "s": 62.195,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36672,
    "c": 0.13554,
    "h": 267
  },
  "luminance": 0.04623
}

Semantic roles & 50–950 ramp

primary

#1F3685

secondary

#B79E49

accent

#C143E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1F3685

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

Preview Lab → · Contrast checker → · Palette generator →