#1F3A96#1F3A96

#1F3A96 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.0% C 0.154 H 266.5°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F3A96
RGB	rgb(31, 58, 150)
HSL	hsl(226, 66%, 35%)
HSV	hsv(226, 79%, 59%)
CMYK	cmyk(79.3%, 61.3%, 0%, 41.2%)
CIE-LAB	lab(28.16, 24.87, -53.29)
CIE-LCH	lch(28.16, 58.81, 295.02°)
OKLab	oklab(39.01% -0.0095 -0.154)
OKLCH	oklch(39.01% 0.154 266.5)
XYZ	xyz(7.5812, 5.5186, 29.5139)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3A96 #967B1F

analogous

#1F7596 #1F3A96 #401F96

triadic

#1F3A96 #961F3A #3A961F

tetradic

#1F3A96 #961F75 #967B1F #1F9640

square

#1F3A96 #961F75 #967B1F #1F9640

split-complementary

#1F3A96 #96401F #75961F

monochromatic

#0A1331 #152663 #1F3A96 #294EC9 #5473DC

Accessibility & contrast

On white

9.98

#1F3A96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1F3A96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3A96

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3A96	#FFFFFF	#000000	##FFFFFF
##1F3A96	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004899

Deuteranopia (green-blind)

#003D94

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f3a96;
/* rgb */ color: rgb(31, 58, 150);
/* oklch */ color: oklch(39.0% 0.154 266.5);

Tailwind

colors: {
  custom: {
    50: '#6f6fb6',
    500: '#1f3a96',
    950: '#000000',
  },
}

SCSS

$custom: #1f3a96;
$custom-light: #6f6fb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3a96",
  "rgb": {
    "r": 31,
    "g": 58,
    "b": 150
  },
  "hsl": {
    "h": 226.387,
    "s": 65.746,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39012,
    "c": 0.15432,
    "h": 266.5
  },
  "luminance": 0.05519
}

Semantic roles & 50–950 ramp

primary

#1F3A96

secondary

#BFA652

accent

#C23FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1F3A96

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

Preview Lab → · Contrast checker → · Palette generator →