#1F1879#1F1879

#1F1879 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.155 H 275.0°. Best body text is #FFFFFF at 14.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F1879
RGB	rgb(31, 24, 121)
HSL	hsl(244, 67%, 28%)
HSV	hsv(244, 80%, 47%)
CMYK	cmyk(74.4%, 80.2%, 0%, 52.5%)
CIE-LAB	lab(17.11, 36.04, -53.30)
CIE-LCH	lch(17.11, 64.34, 304.06°)
OKLab	oklab(30.11% 0.0134 -0.1541)
OKLCH	oklch(30.11% 0.155 275)
XYZ	xyz(4.3418, 2.3246, 18.3053)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1879 #727918

analogous

#184179 #1F1879 #4F1879

triadic

#1F1879 #791F18 #18791F

tetradic

#1F1879 #791841 #727918 #18794F

square

#1F1879 #791841 #727918 #18794F

split-complementary

#1F1879 #794F18 #417918

monochromatic

#07051A #120E46 #1F1879 #2C22AC #4035D7

Accessibility & contrast

On white

14.33

#1F1879 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1F1879 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1879

14.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1879	#FFFFFF	#000000	##FFFFFF
##1F1879	1.00	14.33	1.47	14.33
#FFFFFF	14.33	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7C

Deuteranopia (green-blind)

#002677

Tritanopia (blue-blind)

#003548

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f1879;
/* rgb */ color: rgb(31, 24, 121);
/* oklch */ color: oklch(30.1% 0.155 275.0);

Tailwind

colors: {
  custom: {
    50: '#6b57a1',
    500: '#1f1879',
    950: '#000000',
  },
}

SCSS

$custom: #1f1879;
$custom-light: #6b57a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1879",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 121
  },
  "hsl": {
    "h": 244.33,
    "s": 66.897,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30111,
    "c": 0.15473,
    "h": 275
  },
  "luminance": 0.02325
}

Semantic roles & 50–950 ramp

primary

#1F1879

secondary

#A6AE3F

accent

#EA3EDD

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F1879

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

Preview Lab → · Contrast checker → · Palette generator →