#1F3E8D#1F3E8D

#1F3E8D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.137 H 264.6°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E8D
RGB	rgb(31, 62, 141)
HSL	hsl(223, 64%, 34%)
HSV	hsv(223, 78%, 55%)
CMYK	cmyk(78%, 56%, 0%, 44.7%)
CIE-LAB	lab(28.53, 18.55, -47.16)
CIE-LCH	lch(28.53, 50.68, 291.48°)
OKLab	oklab(39.06% -0.0128 -0.1359)
OKLCH	oklch(39.06% 0.137 264.6)
XYZ	xyz(7.0937, 5.6588, 25.9125)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E8D #8D6E1F

analogous

#1F758D #1F3E8D #371F8D

triadic

#1F3E8D #8D1F3E #3E8D1F

tetradic

#1F3E8D #8D1F75 #8D6E1F #1F8D37

square

#1F3E8D #8D1F75 #8D6E1F #1F8D37

split-complementary

#1F3E8D #8D371F #758D1F

monochromatic

#091229 #14285B #1F3E8D #2A54BF #4E75D8

Accessibility & contrast

On white

9.85

#1F3E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1F3E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E8D

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E8D	#FFFFFF	#000000	##FFFFFF
##1F3E8D	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f3e8d;
/* rgb */ color: rgb(31, 62, 141);
/* oklch */ color: oklch(39.1% 0.137 264.6);

Tailwind

colors: {
  custom: {
    50: '#6c72af',
    500: '#1f3e8d',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e8d;
$custom-light: #6c72af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e8d",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 141
  },
  "hsl": {
    "h": 223.091,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.39059,
    "c": 0.13654,
    "h": 264.6
  },
  "luminance": 0.0566
}

Semantic roles & 50–950 ramp

primary

#1F3E8D

secondary

#BB9C4D

accent

#B841E7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1F3E8D

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

Preview Lab → · Contrast checker → · Palette generator →