#1F147A#1F147A

#1F147A is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.7% C 0.160 H 275.4°. Best body text is #FFFFFF at 14.59:1 contrast (WCAG AA passes).

Color values

HEX	#1F147A
RGB	rgb(31, 20, 122)
HSL	hsl(246, 72%, 28%)
HSV	hsv(246, 84%, 48%)
CMYK	cmyk(74.6%, 83.6%, 0%, 52.2%)
CIE-LAB	lab(16.49, 38.51, -54.97)
CIE-LCH	lch(16.49, 67.12, 305.01°)
OKLab	oklab(29.71% 0.015 -0.1589)
OKLCH	oklch(29.71% 0.16 275.4)
XYZ	xyz(4.3269, 2.1963, 18.6045)
Luminance	0.0220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F147A #6F7A14

analogous

#143C7A #1F147A #52147A

triadic

#1F147A #7A1F14 #147A1F

tetradic

#1F147A #7A143C #6F7A14 #147A52

square

#1F147A #7A143C #6F7A14 #147A52

split-complementary

#1F147A #7A5214 #3C7A14

monochromatic

#07041A #120B45 #1F147A #2C1DAF #3F2CDC

Accessibility & contrast

On white

14.59

#1F147A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1F147A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F147A

14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F147A	#FFFFFF	#000000	##FFFFFF
##1F147A	1.00	14.59	1.44	14.59
#FFFFFF	14.59	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7D

Deuteranopia (green-blind)

#002478

Tritanopia (blue-blind)

#003448

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f147a;
/* rgb */ color: rgb(31, 20, 122);
/* oklch */ color: oklch(29.7% 0.160 275.4);

Tailwind

colors: {
  custom: {
    50: '#6b55a2',
    500: '#1f147a',
    950: '#000000',
  },
}

SCSS

$custom: #1f147a;
$custom-light: #6b55a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f147a",
  "rgb": {
    "r": 31,
    "g": 20,
    "b": 122
  },
  "hsl": {
    "h": 246.471,
    "s": 71.831,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29712,
    "c": 0.15963,
    "h": 275.4
  },
  "luminance": 0.02197
}

Semantic roles & 50–950 ramp

primary

#1F147A

secondary

#A3B03A

accent

#EF39DB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F147A

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

Preview Lab → · Contrast checker → · Palette generator →