#1F4B96#1F4B96

#1F4B96 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.6% C 0.133 H 260.4°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#1F4B96
RGB	rgb(31, 75, 150)
HSL	hsl(218, 66%, 35%)
HSV	hsv(218, 79%, 59%)
CMYK	cmyk(79.3%, 50%, 0%, 41.2%)
CIE-LAB	lab(32.97, 13.24, -45.49)
CIE-LCH	lch(32.97, 47.38, 286.23°)
OKLab	oklab(42.65% -0.0222 -0.1308)
OKLCH	oklch(42.65% 0.133 260.4)
XYZ	xyz(8.5842, 7.5245, 29.8482)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4B96 #966A1F

analogous

#1F8696 #1F4B96 #2E1F96

triadic

#1F4B96 #961F4B #4B961F

tetradic

#1F4B96 #961F86 #966A1F #1F962E

square

#1F4B96 #961F86 #966A1F #1F962E

split-complementary

#1F4B96 #962E1F #86961F

monochromatic

#0A1831 #153263 #1F4B96 #2964C9 #5486DC

Accessibility & contrast

On white

8.38

#1F4B96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1F4B96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4B96

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4B96	#FFFFFF	#000000	##FFFFFF
##1F4B96	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5399

Deuteranopia (green-blind)

#004895

Tritanopia (blue-blind)

#005D69

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4b96;
/* rgb */ color: rgb(31, 75, 150);
/* oklch */ color: oklch(42.6% 0.133 260.4);

Tailwind

colors: {
  custom: {
    50: '#6e7cb5',
    500: '#1f4b96',
    950: '#000000',
  },
}

SCSS

$custom: #1f4b96;
$custom-light: #6e7cb5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4b96",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 150
  },
  "hsl": {
    "h": 217.815,
    "s": 65.746,
    "l": 35.49
  },
  "oklch": {
    "l": 0.42648,
    "c": 0.13265,
    "h": 260.4
  },
  "luminance": 0.07525
}

Semantic roles & 50–950 ramp

primary

#1F4B96

secondary

#BF9752

accent

#AA3FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4B96

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

Preview Lab → · Contrast checker → · Palette generator →