#1F2178#1F2178

#1F2178 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.4% C 0.144 H 273.4°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F2178
RGB	rgb(31, 33, 120)
HSL	hsl(239, 59%, 30%)
HSV	hsv(239, 74%, 47%)
CMYK	cmyk(74.2%, 72.5%, 0%, 52.9%)
CIE-LAB	lab(18.95, 30.22, -49.63)
CIE-LCH	lch(18.95, 58.10, 301.34°)
OKLab	oklab(31.39% 0.0086 -0.1435)
OKLCH	oklch(31.39% 0.144 273.4)
XYZ	xyz(4.4980, 2.7346, 18.0564)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2178 #78761F

analogous

#1F4D78 #1F2178 #4A1F78

triadic

#1F2178 #781F21 #21781F

tetradic

#1F2178 #781F4D #78761F #1F784A

square

#1F2178 #781F4D #78761F #1F784A

split-complementary

#1F2178 #784A1F #4D781F

monochromatic

#060718 #121447 #1F2178 #2C2EA9 #4346CE

Accessibility & contrast

On white

13.57

#1F2178 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1F2178 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2178

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2178	#FFFFFF	#000000	##FFFFFF
##1F2178	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327B

Deuteranopia (green-blind)

#002A76

Tritanopia (blue-blind)

#00394A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f2178;
/* rgb */ color: rgb(31, 33, 120);
/* oklch */ color: oklch(31.4% 0.144 273.4);

Tailwind

colors: {
  custom: {
    50: '#695da0',
    500: '#1f2178',
    950: '#000000',
  },
}

SCSS

$custom: #1f2178;
$custom-light: #695da0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2178",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 120
  },
  "hsl": {
    "h": 238.652,
    "s": 58.94,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31387,
    "c": 0.14375,
    "h": 273.4
  },
  "luminance": 0.02735
}

Semantic roles & 50–950 ramp

primary

#1F2178

secondary

#ABA947

accent

#DF46E2

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #1F2178

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

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