#1F1880#1F1880

#1F1880 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.9% C 0.164 H 274.1°. Best body text is #FFFFFF at 13.99:1 contrast (WCAG AA passes).

Color values

HEX	#1F1880
RGB	rgb(31, 24, 128)
HSL	hsl(244, 68%, 30%)
HSV	hsv(244, 81%, 50%)
CMYK	cmyk(75.8%, 81.3%, 0%, 49.8%)
CIE-LAB	lab(17.93, 38.39, -56.40)
CIE-LCH	lch(17.93, 68.23, 304.24°)
OKLab	oklab(30.93% 0.0117 -0.1632)
OKLCH	oklch(30.93% 0.164 274.1)
XYZ	xyz(4.7867, 2.5026, 20.6487)
Luminance	0.0250 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1880 #798018

analogous

#184580 #1F1880 #531880

triadic

#1F1880 #801F18 #18801F

tetradic

#1F1880 #801845 #798018 #188053

square

#1F1880 #801845 #798018 #188053

split-complementary

#1F1880 #805318 #458018

monochromatic

#06051A #130E4C #1F1880 #2B22B4 #4339DA

Accessibility & contrast

On white

13.99

#1F1880 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1F1880 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1880

13.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1880	#FFFFFF	#000000	##FFFFFF
##1F1880	1.00	13.99	1.50	13.99
#FFFFFF	13.99	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003183

Deuteranopia (green-blind)

#00277E

Tritanopia (blue-blind)

#00384C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f1880;
/* rgb */ color: rgb(31, 24, 128);
/* oklch */ color: oklch(30.9% 0.164 274.1);

Tailwind

colors: {
  custom: {
    50: '#6c57a6',
    500: '#1f1880',
    950: '#000000',
  },
}

SCSS

$custom: #1f1880;
$custom-light: #6c57a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1880",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 128
  },
  "hsl": {
    "h": 244.038,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.3093,
    "c": 0.16358,
    "h": 274.1
  },
  "luminance": 0.02503
}

Semantic roles & 50–950 ramp

primary

#1F1880

secondary

#ACB440

accent

#EB3DE0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F1880

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

Preview Lab → · Contrast checker → · Palette generator →