#1F2874#1F2874

#1F2874 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.3% C 0.129 H 271.7°. Best body text is #FFFFFF at 13.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F2874
RGB	rgb(31, 40, 116)
HSL	hsl(234, 58%, 29%)
HSV	hsv(234, 73%, 45%)
CMYK	cmyk(73.3%, 65.5%, 0%, 54.5%)
CIE-LAB	lab(20.32, 24.00, -44.81)
CIE-LCH	lch(20.32, 50.83, 298.17°)
OKLab	oklab(32.27% 0.0039 -0.1294)
OKLCH	oklch(32.27% 0.129 271.7)
XYZ	xyz(4.4752, 3.0694, 16.8762)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2874 #746B1F

analogous

#1F5374 #1F2874 #411F74

triadic

#1F2874 #741F28 #28741F

tetradic

#1F2874 #741F53 #746B1F #1F7441

square

#1F2874 #741F53 #746B1F #1F7441

split-complementary

#1F2874 #74411F #53741F

monochromatic

#060818 #121744 #1F2874 #2C39A4 #4150CC

Accessibility & contrast

On white

13.01

#1F2874 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1F2874 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2874

13.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2874	#FFFFFF	#000000	##FFFFFF
##1F2874	1.00	13.01	1.61	13.01
#FFFFFF	13.01	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003576

Deuteranopia (green-blind)

#002D73

Tritanopia (blue-blind)

#003B4A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f2874;
/* rgb */ color: rgb(31, 40, 116);
/* oklch */ color: oklch(32.3% 0.129 271.7);

Tailwind

colors: {
  custom: {
    50: '#68629d',
    500: '#1f2874',
    950: '#000000',
  },
}

SCSS

$custom: #1f2874;
$custom-light: #68629d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2874",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 116
  },
  "hsl": {
    "h": 233.647,
    "s": 57.823,
    "l": 28.824
  },
  "oklch": {
    "l": 0.32266,
    "c": 0.12943,
    "h": 271.7
  },
  "luminance": 0.0307
}

Semantic roles & 50–950 ramp

primary

#1F2874

secondary

#A89D47

accent

#D147E1

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2874

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

Preview Lab → · Contrast checker → · Palette generator →