#1F3A94#1F3A94

#1F3A94 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.152 H 266.4°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1F3A94
RGB	rgb(31, 58, 148)
HSL	hsl(226, 65%, 35%)
HSV	hsv(226, 79%, 58%)
CMYK	cmyk(79.1%, 60.8%, 0%, 42%)
CIE-LAB	lab(27.99, 24.09, -52.34)
CIE-LCH	lch(27.99, 57.62, 294.71°)
OKLab	oklab(38.83% -0.0095 -0.1512)
OKLCH	oklch(38.83% 0.152 266.4)
XYZ	xyz(7.4216, 5.4547, 28.6730)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3A94 #94791F

analogous

#1F7494 #1F3A94 #3F1F94

triadic

#1F3A94 #941F3A #3A941F

tetradic

#1F3A94 #941F74 #94791F #1F943F

square

#1F3A94 #941F74 #94791F #1F943F

split-complementary

#1F3A94 #943F1F #74941F

monochromatic

#0A122F #142661 #1F3A94 #2A4EC7 #5372DB

Accessibility & contrast

On white

10.04

#1F3A94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1F3A94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3A94

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3A94	#FFFFFF	#000000	##FFFFFF
##1F3A94	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004897

Deuteranopia (green-blind)

#003D92

Tritanopia (blue-blind)

#005161

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f3a94;
/* rgb */ color: rgb(31, 58, 148);
/* oklch */ color: oklch(38.8% 0.152 266.4);

Tailwind

colors: {
  custom: {
    50: '#6e6fb4',
    500: '#1f3a94',
    950: '#000000',
  },
}

SCSS

$custom: #1f3a94;
$custom-light: #6e6fb4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3a94",
  "rgb": {
    "r": 31,
    "g": 58,
    "b": 148
  },
  "hsl": {
    "h": 226.154,
    "s": 65.363,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38831,
    "c": 0.15155,
    "h": 266.4
  },
  "luminance": 0.05456
}

Semantic roles & 50–950 ramp

primary

#1F3A94

secondary

#BEA551

accent

#C13FE8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1F3A94

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

Preview Lab → · Contrast checker → · Palette generator →