#1F3D8D#1F3D8D

#1F3D8D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.138 H 265.0°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D8D
RGB	rgb(31, 61, 141)
HSL	hsl(224, 64%, 34%)
HSV	hsv(224, 78%, 55%)
CMYK	cmyk(78%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(28.25, 19.25, -47.62)
CIE-LCH	lch(28.25, 51.36, 292.01°)
OKLab	oklab(38.84% -0.012 -0.1373)
OKLCH	oklch(38.84% 0.138 265)
XYZ	xyz(7.0398, 5.5511, 25.8946)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D8D #8D6F1F

analogous

#1F748D #1F3D8D #381F8D

triadic

#1F3D8D #8D1F3D #3D8D1F

tetradic

#1F3D8D #8D1F74 #8D6F1F #1F8D38

square

#1F3D8D #8D1F74 #8D6F1F #1F8D38

split-complementary

#1F3D8D #8D381F #748D1F

monochromatic

#091229 #14275B #1F3D8D #2A53BF #4E74D8

Accessibility & contrast

On white

9.95

#1F3D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1F3D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D8D

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D8D	#FFFFFF	#000000	##FFFFFF
##1F3D8D	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f3d8d;
/* rgb */ color: rgb(31, 61, 141);
/* oklch */ color: oklch(38.8% 0.138 265.0);

Tailwind

colors: {
  custom: {
    50: '#6c72af',
    500: '#1f3d8d',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d8d;
$custom-light: #6c72af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d8d",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 223.636,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38844,
    "c": 0.13785,
    "h": 265
  },
  "luminance": 0.05552
}

Semantic roles & 50–950 ramp

primary

#1F3D8D

secondary

#BB9D4D

accent

#BA41E7

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1F3D8D

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

Preview Lab → · Contrast checker → · Palette generator →