#1F3C8D#1F3C8D

#1F3C8D is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.139 H 265.4°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#1F3C8D
RGB	rgb(31, 60, 141)
HSL	hsl(224, 64%, 34%)
HSV	hsv(224, 78%, 55%)
CMYK	cmyk(78%, 57.4%, 0%, 44.7%)
CIE-LAB	lab(27.97, 19.94, -48.08)
CIE-LCH	lch(27.97, 52.05, 292.52°)
OKLab	oklab(38.63% -0.0112 -0.1387)
OKLCH	oklch(38.63% 0.139 265.4)
XYZ	xyz(6.9870, 5.4453, 25.8770)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3C8D #8D701F

analogous

#1F738D #1F3C8D #391F8D

triadic

#1F3C8D #8D1F3C #3C8D1F

tetradic

#1F3C8D #8D1F73 #8D701F #1F8D39

square

#1F3C8D #8D1F73 #8D701F #1F8D39

split-complementary

#1F3C8D #8D391F #738D1F

monochromatic

#091129 #14275B #1F3C8D #2A51BF #4E73D8

Accessibility & contrast

On white

10.05

#1F3C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1F3C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3C8D

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3C8D	#FFFFFF	#000000	##FFFFFF
##1F3C8D	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f3c8d;
/* rgb */ color: rgb(31, 60, 141);
/* oklch */ color: oklch(38.6% 0.139 265.4);

Tailwind

colors: {
  custom: {
    50: '#6c71af',
    500: '#1f3c8d',
    950: '#000000',
  },
}

SCSS

$custom: #1f3c8d;
$custom-light: #6c71af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3c8d",
  "rgb": {
    "r": 31,
    "g": 60,
    "b": 141
  },
  "hsl": {
    "h": 224.182,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38631,
    "c": 0.13915,
    "h": 265.4
  },
  "luminance": 0.05446
}

Semantic roles & 50–950 ramp

primary

#1F3C8D

secondary

#BB9E4D

accent

#BB41E7

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1F3C8D

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

Preview Lab → · Contrast checker → · Palette generator →