#1F3F95#1F3F95

#1F3F95 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.147 H 264.9°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#1F3F95
RGB	rgb(31, 63, 149)
HSL	hsl(224, 66%, 35%)
HSV	hsv(224, 79%, 58%)
CMYK	cmyk(79.2%, 57.7%, 0%, 41.6%)
CIE-LAB	lab(29.45, 21.05, -50.58)
CIE-LCH	lch(29.45, 54.79, 292.60°)
OKLab	oklab(39.95% -0.013 -0.146)
OKLCH	oklch(39.95% 0.147 264.9)
XYZ	xyz(7.7655, 6.0154, 29.1798)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3F95 #95751F

analogous

#1F7A95 #1F3F95 #3A1F95

triadic

#1F3F95 #951F3F #3F951F

tetradic

#1F3F95 #951F7A #95751F #1F953A

square

#1F3F95 #951F7A #95751F #1F953A

split-complementary

#1F3F95 #953A1F #7A951F

monochromatic

#0A1430 #142A62 #1F3F95 #2A54C8 #5378DB

Accessibility & contrast

On white

9.53

#1F3F95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1F3F95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3F95

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3F95	#FFFFFF	#000000	##FFFFFF
##1F3F95	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B98

Deuteranopia (green-blind)

#004093

Tritanopia (blue-blind)

#005463

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f3f95;
/* rgb */ color: rgb(31, 63, 149);
/* oklch */ color: oklch(40.0% 0.147 264.9);

Tailwind

colors: {
  custom: {
    50: '#6e73b5',
    500: '#1f3f95',
    950: '#000000',
  },
}

SCSS

$custom: #1f3f95;
$custom-light: #6e73b5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3f95",
  "rgb": {
    "r": 31,
    "g": 63,
    "b": 149
  },
  "hsl": {
    "h": 223.729,
    "s": 65.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.3995,
    "c": 0.14657,
    "h": 264.9
  },
  "luminance": 0.06016
}

Semantic roles & 50–950 ramp

primary

#1F3F95

secondary

#BFA151

accent

#BB3FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F3F95

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

Preview Lab → · Contrast checker → · Palette generator →