#1F1973#1F1973

#1F1973 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.146 H 275.6°. Best body text is #FFFFFF at 14.53:1 contrast (WCAG AA passes).

Color values

HEX	#1F1973
RGB	rgb(31, 25, 115)
HSL	hsl(244, 64%, 27%)
HSV	hsv(244, 78%, 45%)
CMYK	cmyk(73%, 78.3%, 0%, 54.9%)
CIE-LAB	lab(16.62, 33.40, -50.24)
CIE-LCH	lch(16.62, 60.33, 303.61°)
OKLab	oklab(29.57% 0.0143 -0.1452)
OKLCH	oklch(29.57% 0.146 275.6)
XYZ	xyz(4.0062, 2.2240, 16.4345)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1973 #6D7319

analogous

#194073 #1F1973 #4C1973

triadic

#1F1973 #731F19 #19731F

tetradic

#1F1973 #731940 #6D7319 #19734C

square

#1F1973 #731940 #6D7319 #19734C

split-complementary

#1F1973 #734C19 #407319

monochromatic

#070519 #110E41 #1F1973 #2D24A5 #3E34D3

Accessibility & contrast

On white

14.53

#1F1973 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1F1973 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1973

14.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1973	#FFFFFF	#000000	##FFFFFF
##1F1973	1.00	14.53	1.44	14.53
#FFFFFF	14.53	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D76

Deuteranopia (green-blind)

#002571

Tritanopia (blue-blind)

#003345

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f1973;
/* rgb */ color: rgb(31, 25, 115);
/* oklch */ color: oklch(29.6% 0.146 275.6);

Tailwind

colors: {
  custom: {
    50: '#69579c',
    500: '#1f1973',
    950: '#000000',
  },
}

SCSS

$custom: #1f1973;
$custom-light: #69579c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1973",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 115
  },
  "hsl": {
    "h": 244,
    "s": 64.286,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29566,
    "c": 0.14596,
    "h": 275.6
  },
  "luminance": 0.02224
}

Semantic roles & 50–950 ramp

primary

#1F1973

secondary

#A1A840

accent

#E741DC

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F1973

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

Preview Lab → · Contrast checker → · Palette generator →