#1F4178#1F4178

#1F4178 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.1% C 0.102 H 259.6°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F4178
RGB	rgb(31, 65, 120)
HSL	hsl(217, 59%, 30%)
HSV	hsv(217, 74%, 47%)
CMYK	cmyk(74.2%, 45.8%, 0%, 52.9%)
CIE-LAB	lab(27.92, 8.04, -35.06)
CIE-LCH	lch(27.92, 35.97, 282.92°)
OKLab	oklab(38.11% -0.0184 -0.1003)
OKLCH	oklch(38.11% 0.102 259.6)
XYZ	xyz(5.8443, 5.4273, 18.5052)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4178 #78561F

analogous

#1F6D78 #1F4178 #2A1F78

triadic

#1F4178 #781F41 #41781F

tetradic

#1F4178 #781F6D #78561F #1F782A

square

#1F4178 #781F6D #78561F #1F782A

split-complementary

#1F4178 #782A1F #6D781F

monochromatic

#060D18 #122747 #1F4178 #2C5BA9 #4378CE

Accessibility & contrast

On white

10.07

#1F4178 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1F4178 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4178

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4178	#FFFFFF	#000000	##FFFFFF
##1F4178	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26467A

Deuteranopia (green-blind)

#153E77

Tritanopia (blue-blind)

#004E56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f4178;
/* rgb */ color: rgb(31, 65, 120);
/* oklch */ color: oklch(38.1% 0.102 259.6);

Tailwind

colors: {
  custom: {
    50: '#67759f',
    500: '#1f4178',
    950: '#000000',
  },
}

SCSS

$custom: #1f4178;
$custom-light: #67759f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4178",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 120
  },
  "hsl": {
    "h": 217.079,
    "s": 58.94,
    "l": 29.608
  },
  "oklch": {
    "l": 0.38108,
    "c": 0.10198,
    "h": 259.6
  },
  "luminance": 0.05428
}

Semantic roles & 50–950 ramp

primary

#1F4178

secondary

#AB8547

accent

#A646E2

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #1F4178

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

Preview Lab → · Contrast checker → · Palette generator →