#1F1A74#1F1A74

#1F1A74 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.146 H 275.3°. Best body text is #FFFFFF at 14.40:1 contrast (WCAG AA passes).

Color values

HEX	#1F1A74
RGB	rgb(31, 26, 116)
HSL	hsl(243, 63%, 28%)
HSV	hsv(243, 78%, 45%)
CMYK	cmyk(73.3%, 77.6%, 0%, 54.5%)
CIE-LAB	lab(16.94, 33.15, -50.36)
CIE-LCH	lch(16.94, 60.29, 303.36°)
OKLab	oklab(29.83% 0.0136 -0.1456)
OKLCH	oklch(29.83% 0.146 275.3)
XYZ	xyz(4.0858, 2.2907, 16.7464)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1A74 #6F741A

analogous

#1A4274 #1F1A74 #4C1A74

triadic

#1F1A74 #741F1A #1A741F

tetradic

#1F1A74 #741A42 #6F741A #1A744C

square

#1F1A74 #741A42 #6F741A #1A744C

split-complementary

#1F1A74 #744C1A #42741A

monochromatic

#070619 #120F42 #1F1A74 #2C25A6 #3F36D2

Accessibility & contrast

On white

14.40

#1F1A74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1F1A74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1A74

14.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1A74	#FFFFFF	#000000	##FFFFFF
##1F1A74	1.00	14.40	1.46	14.40
#FFFFFF	14.40	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E77

Deuteranopia (green-blind)

#002672

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f1a74;
/* rgb */ color: rgb(31, 26, 116);
/* oklch */ color: oklch(29.8% 0.146 275.3);

Tailwind

colors: {
  custom: {
    50: '#69589d',
    500: '#1f1a74',
    950: '#000000',
  },
}

SCSS

$custom: #1f1a74;
$custom-light: #69589d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1a74",
  "rgb": {
    "r": 31,
    "g": 26,
    "b": 116
  },
  "hsl": {
    "h": 243.333,
    "s": 63.38,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29827,
    "c": 0.14622,
    "h": 275.3
  },
  "luminance": 0.02291
}

Semantic roles & 50–950 ramp

primary

#1F1A74

secondary

#A3A941

accent

#E641DD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F1A74

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

Preview Lab → · Contrast checker → · Palette generator →