#1F4AA1#1F4AA1

#1F4AA1 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.3% C 0.149 H 262.3°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F4AA1
RGB	rgb(31, 74, 161)
HSL	hsl(220, 68%, 38%)
HSV	hsv(220, 81%, 63%)
CMYK	cmyk(80.7%, 54%, 0%, 36.9%)
CIE-LAB	lab(33.48, 18.31, -51.32)
CIE-LCH	lch(33.48, 54.49, 289.64°)
OKLab	oklab(43.29% -0.02 -0.1479)
OKLCH	oklch(43.29% 0.149 262.3)
XYZ	xyz(9.4446, 7.7610, 34.7115)
Luminance	0.0776 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4AA1 #A1761F

analogous

#1F8BA1 #1F4AA1 #351FA1

triadic

#1F4AA1 #A11F4A #4AA11F

tetradic

#1F4AA1 #A11F8B #A1761F #1FA135

square

#1F4AA1 #A11F8B #A1761F #1FA135

split-complementary

#1F4AA1 #A1351F #8BA11F

monochromatic

#0B1B3A #15326E #1F4AA1 #2962D4 #5B87DF

Accessibility & contrast

On white

8.23

#1F4AA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1F4AA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4AA1

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4AA1	#FFFFFF	#000000	##FFFFFF
##1F4AA1	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0455A4

Deuteranopia (green-blind)

#00499F

Tritanopia (blue-blind)

#005F6E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f4aa1;
/* rgb */ color: rgb(31, 74, 161);
/* oklch */ color: oklch(43.3% 0.149 262.3);

Tailwind

colors: {
  custom: {
    50: '#717bbd',
    500: '#1f4aa1',
    950: '#000000',
  },
}

SCSS

$custom: #1f4aa1;
$custom-light: #717bbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4aa1",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 161
  },
  "hsl": {
    "h": 220.154,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.43289,
    "c": 0.1493,
    "h": 262.3
  },
  "luminance": 0.07762
}

Semantic roles & 50–950 ramp

primary

#1F4AA1

secondary

#C4A058

accent

#B13DEB

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4AA1

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

Preview Lab → · Contrast checker → · Palette generator →