#1F1978#1F1978

#1F1978 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.152 H 275.0°. Best body text is #FFFFFF at 14.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F1978
RGB	rgb(31, 25, 120)
HSL	hsl(244, 66%, 28%)
HSV	hsv(244, 79%, 47%)
CMYK	cmyk(74.2%, 79.2%, 0%, 52.9%)
CIE-LAB	lab(17.19, 35.13, -52.52)
CIE-LCH	lch(17.19, 63.19, 303.77°)
OKLab	oklab(30.14% 0.0132 -0.1519)
OKLCH	oklch(30.14% 0.152 275)
XYZ	xyz(4.3017, 2.3422, 17.9910)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1978 #727819

analogous

#194278 #1F1978 #4E1978

triadic

#1F1978 #781F19 #19781F

tetradic

#1F1978 #781942 #727819 #19784E

square

#1F1978 #781942 #727819 #19784E

split-complementary

#1F1978 #784E19 #427819

monochromatic

#070519 #120E45 #1F1978 #2C24AB #4036D5

Accessibility & contrast

On white

14.30

#1F1978 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1F1978 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1978

14.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1978	#FFFFFF	#000000	##FFFFFF
##1F1978	1.00	14.30	1.47	14.30
#FFFFFF	14.30	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7B

Deuteranopia (green-blind)

#002676

Tritanopia (blue-blind)

#003547

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f1978;
/* rgb */ color: rgb(31, 25, 120);
/* oklch */ color: oklch(30.1% 0.152 275.0);

Tailwind

colors: {
  custom: {
    50: '#6a58a0',
    500: '#1f1978',
    950: '#000000',
  },
}

SCSS

$custom: #1f1978;
$custom-light: #6a58a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1978",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 120
  },
  "hsl": {
    "h": 243.789,
    "s": 65.517,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30135,
    "c": 0.15246,
    "h": 275
  },
  "luminance": 0.02343
}

Semantic roles & 50–950 ramp

primary

#1F1978

secondary

#A6AD40

accent

#E83FDE

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F1978

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

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