#1F1888#1F1888

#1F1888 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.173 H 273.2°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F1888
RGB	rgb(31, 24, 136)
HSL	hsl(244, 70%, 31%)
HSV	hsv(244, 82%, 53%)
CMYK	cmyk(77.2%, 82.4%, 0%, 46.7%)
CIE-LAB	lab(18.89, 41.03, -59.86)
CIE-LCH	lch(18.89, 72.58, 304.43°)
OKLab	oklab(31.88% 0.0097 -0.1732)
OKLCH	oklch(31.88% 0.173 273.2)
XYZ	xyz(5.3342, 2.7216, 23.5320)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1888 #818818

analogous

#184988 #1F1888 #571888

triadic

#1F1888 #881F18 #18881F

tetradic

#1F1888 #881849 #818818 #188857

square

#1F1888 #881849 #818818 #188857

split-complementary

#1F1888 #885718 #498818

monochromatic

#070620 #130F54 #1F1888 #2B21BC #473EDD

Accessibility & contrast

On white

13.60

#1F1888 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1F1888 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1888

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1888	#FFFFFF	#000000	##FFFFFF
##1F1888	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002886

Tritanopia (blue-blind)

#003B50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f1888;
/* rgb */ color: rgb(31, 24, 136);
/* oklch */ color: oklch(31.9% 0.173 273.2);

Tailwind

colors: {
  custom: {
    50: '#6e58ac',
    500: '#1f1888',
    950: '#000000',
  },
}

SCSS

$custom: #1f1888;
$custom-light: #6e58ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1888",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 136
  },
  "hsl": {
    "h": 243.75,
    "s": 70,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31881,
    "c": 0.17346,
    "h": 273.2
  },
  "luminance": 0.02722
}

Semantic roles & 50–950 ramp

primary

#1F1888

secondary

#B4BC40

accent

#ED3BE2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1F1888

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

Preview Lab → · Contrast checker → · Palette generator →