#1F2A70#1F2A70

#1F2A70 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.3% C 0.121 H 271.1°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A70
RGB	rgb(31, 42, 112)
HSL	hsl(232, 57%, 28%)
HSV	hsv(232, 72%, 44%)
CMYK	cmyk(72.3%, 62.5%, 0%, 56.1%)
CIE-LAB	lab(20.51, 21.04, -41.94)
CIE-LCH	lch(20.51, 46.92, 296.64°)
OKLab	oklab(32.29% 0.0024 -0.1209)
OKLCH	oklch(32.29% 0.121 271.1)
XYZ	xyz(4.3167, 3.1167, 15.7002)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A70 #70651F

analogous

#1F5270 #1F2A70 #3C1F70

triadic

#1F2A70 #701F2A #2A701F

tetradic

#1F2A70 #701F52 #70651F #1F703C

square

#1F2A70 #701F52 #70651F #1F703C

split-complementary

#1F2A70 #703C1F #52701F

monochromatic

#070918 #121840 #1F2A70 #2C3CA0 #3F52CA

Accessibility & contrast

On white

12.94

#1F2A70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1F2A70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A70

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A70	#FFFFFF	#000000	##FFFFFF
##1F2A70	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003572

Deuteranopia (green-blind)

#002E6F

Tritanopia (blue-blind)

#003B48

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f2a70;
/* rgb */ color: rgb(31, 42, 112);
/* oklch */ color: oklch(32.3% 0.121 271.1);

Tailwind

colors: {
  custom: {
    50: '#66639a',
    500: '#1f2a70',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a70;
$custom-light: #66639a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a70",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 112
  },
  "hsl": {
    "h": 231.852,
    "s": 56.643,
    "l": 28.039
  },
  "oklch": {
    "l": 0.32292,
    "c": 0.12093,
    "h": 271.1
  },
  "luminance": 0.03117
}

Semantic roles & 50–950 ramp

primary

#1F2A70

secondary

#A49747

accent

#CB48E0

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2A70

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

Preview Lab → · Contrast checker → · Palette generator →