#1F3985#1F3985

#1F3985 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.3% C 0.132 H 265.9°. Best body text is #FFFFFF at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#1F3985
RGB	rgb(31, 57, 133)
HSL	hsl(225, 62%, 32%)
HSV	hsv(225, 77%, 52%)
CMYK	cmyk(76.7%, 57.1%, 0%, 47.8%)
CIE-LAB	lab(26.48, 18.83, -45.53)
CIE-LCH	lch(26.48, 49.27, 292.47°)
OKLab	oklab(37.31% -0.0094 -0.1313)
OKLCH	oklch(37.31% 0.132 265.9)
XYZ	xyz(6.2604, 4.9103, 22.8036)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3985 #856B1F

analogous

#1F6C85 #1F3985 #381F85

triadic

#1F3985 #851F39 #39851F

tetradic

#1F3985 #851F6C #856B1F #1F8538

square

#1F3985 #851F6C #856B1F #1F8538

split-complementary

#1F3985 #85381F #6C851F

monochromatic

#080E22 #132453 #1F3985 #2B4EB7 #4A6DD5

Accessibility & contrast

On white

10.59

#1F3985 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1F3985 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3985

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3985	#FFFFFF	#000000	##FFFFFF
##1F3985	1.00	10.59	1.98	10.59
#FFFFFF	10.59	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004488

Deuteranopia (green-blind)

#003A83

Tritanopia (blue-blind)

#004C59

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f3985;
/* rgb */ color: rgb(31, 57, 133);
/* oklch */ color: oklch(37.3% 0.132 265.9);

Tailwind

colors: {
  custom: {
    50: '#6b6ea9',
    500: '#1f3985',
    950: '#000000',
  },
}

SCSS

$custom: #1f3985;
$custom-light: #6b6ea9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3985",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 133
  },
  "hsl": {
    "h": 224.706,
    "s": 62.195,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37308,
    "c": 0.1316,
    "h": 265.9
  },
  "luminance": 0.04911
}

Semantic roles & 50–950 ramp

primary

#1F3985

secondary

#B79B49

accent

#BC43E5

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1F3985

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

Preview Lab → · Contrast checker → · Palette generator →