#1F2F78#1F2F78

#1F2F78 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.1% C 0.126 H 269.2°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F78
RGB	rgb(31, 47, 120)
HSL	hsl(229, 59%, 30%)
HSV	hsv(229, 74%, 47%)
CMYK	cmyk(74.2%, 60.8%, 0%, 52.9%)
CIE-LAB	lab(22.58, 20.67, -43.68)
CIE-LCH	lch(22.58, 48.32, 295.33°)
OKLab	oklab(34.05% -0.0018 -0.1259)
OKLCH	oklch(34.05% 0.126 269.2)
XYZ	xyz(4.9706, 3.6799, 18.2140)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F78 #78681F

analogous

#1F5C78 #1F2F78 #3B1F78

triadic

#1F2F78 #781F2F #2F781F

tetradic

#1F2F78 #781F5C #78681F #1F783B

square

#1F2F78 #781F5C #78681F #1F783B

split-complementary

#1F2F78 #783B1F #5C781F

monochromatic

#060A18 #121C47 #1F2F78 #2C42A9 #435CCE

Accessibility & contrast

On white

12.10

#1F2F78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1F2F78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F78

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F78	#FFFFFF	#000000	##FFFFFF
##1F2F78	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7A

Deuteranopia (green-blind)

#003277

Tritanopia (blue-blind)

#00414E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2f78;
/* rgb */ color: rgb(31, 47, 120);
/* oklch */ color: oklch(34.1% 0.126 269.2);

Tailwind

colors: {
  custom: {
    50: '#6867a0',
    500: '#1f2f78',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f78;
$custom-light: #6867a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f78",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 120
  },
  "hsl": {
    "h": 229.213,
    "s": 58.94,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34054,
    "c": 0.12596,
    "h": 269.2
  },
  "luminance": 0.0368
}

Semantic roles & 50–950 ramp

primary

#1F2F78

secondary

#AB9947

accent

#C646E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #1F2F78

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

Preview Lab → · Contrast checker → · Palette generator →