#1F3F92#1F3F92

#1F3F92 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.7% C 0.142 H 264.7°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F3F92
RGB	rgb(31, 63, 146)
HSL	hsl(223, 65%, 35%)
HSV	hsv(223, 79%, 57%)
CMYK	cmyk(78.8%, 56.8%, 0%, 42.7%)
CIE-LAB	lab(29.21, 19.86, -49.13)
CIE-LCH	lch(29.21, 52.99, 292.01°)
OKLab	oklab(39.69% -0.0132 -0.1417)
OKLCH	oklch(39.69% 0.142 264.7)
XYZ	xyz(7.5290, 5.9208, 27.9346)
Luminance	0.0592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3F92 #92721F

analogous

#1F7992 #1F3F92 #381F92

triadic

#1F3F92 #921F3F #3F921F

tetradic

#1F3F92 #921F79 #92721F #1F9238

square

#1F3F92 #921F79 #92721F #1F9238

split-complementary

#1F3F92 #92381F #79921F

monochromatic

#0A132D #142960 #1F3F92 #2A55C4 #5177DA

Accessibility & contrast

On white

9.61

#1F3F92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1F3F92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3F92

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3F92	#FFFFFF	#000000	##FFFFFF
##1F3F92	1.00	9.61	2.18	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A95

Deuteranopia (green-blind)

#004090

Tritanopia (blue-blind)

#005462

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f3f92;
/* rgb */ color: rgb(31, 63, 146);
/* oklch */ color: oklch(39.7% 0.142 264.7);

Tailwind

colors: {
  custom: {
    50: '#6d73b3',
    500: '#1f3f92',
    950: '#000000',
  },
}

SCSS

$custom: #1f3f92;
$custom-light: #6d73b3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3f92",
  "rgb": {
    "r": 31,
    "g": 63,
    "b": 146
  },
  "hsl": {
    "h": 223.304,
    "s": 64.972,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39694,
    "c": 0.14235,
    "h": 264.7
  },
  "luminance": 0.05922
}

Semantic roles & 50–950 ramp

primary

#1F3F92

secondary

#BD9F50

accent

#B940E8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F3F92

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

Preview Lab → · Contrast checker → · Palette generator →