#1F2174#1F2174

#1F2174 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.138 H 273.8°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F2174
RGB	rgb(31, 33, 116)
HSL	hsl(239, 58%, 29%)
HSV	hsv(239, 73%, 45%)
CMYK	cmyk(73.3%, 71.6%, 0%, 54.5%)
CIE-LAB	lab(18.54, 28.74, -47.73)
CIE-LCH	lch(18.54, 55.71, 301.05°)
OKLab	oklab(30.97% 0.0091 -0.1379)
OKLCH	oklch(30.97% 0.138 273.8)
XYZ	xyz(4.2603, 2.6396, 16.8046)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2174 #74721F

analogous

#1F4C74 #1F2174 #481F74

triadic

#1F2174 #741F21 #21741F

tetradic

#1F2174 #741F4C #74721F #1F7448

square

#1F2174 #741F4C #74721F #1F7448

split-complementary

#1F2174 #74481F #4C741F

monochromatic

#060718 #121344 #1F2174 #2C2FA4 #4144CC

Accessibility & contrast

On white

13.74

#1F2174 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F2174 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2174

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2174	#FFFFFF	#000000	##FFFFFF
##1F2174	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003177

Deuteranopia (green-blind)

#002972

Tritanopia (blue-blind)

#003747

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f2174;
/* rgb */ color: rgb(31, 33, 116);
/* oklch */ color: oklch(31.0% 0.138 273.8);

Tailwind

colors: {
  custom: {
    50: '#685d9d',
    500: '#1f2174',
    950: '#000000',
  },
}

SCSS

$custom: #1f2174;
$custom-light: #685d9d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2174",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 116
  },
  "hsl": {
    "h": 238.588,
    "s": 57.823,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30968,
    "c": 0.13825,
    "h": 273.8
  },
  "luminance": 0.0264
}

Semantic roles & 50–950 ramp

primary

#1F2174

secondary

#A8A547

accent

#DD47E1

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F2174

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

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