#1F148A#1F148A

#1F148A is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.7% C 0.179 H 273.3°. Best body text is #FFFFFF at 13.77:1 contrast (WCAG AA passes).

Color values

HEX	#1F148A
RGB	rgb(31, 20, 138)
HSL	hsl(246, 75%, 31%)
HSV	hsv(246, 86%, 54%)
CMYK	cmyk(77.5%, 85.5%, 0%, 45.9%)
CIE-LAB	lab(18.48, 43.61, -61.80)
CIE-LCH	lch(18.48, 75.64, 305.21°)
OKLab	oklab(31.67% 0.0104 -0.1787)
OKLCH	oklch(31.67% 0.179 273.3)
XYZ	xyz(5.4011, 2.6260, 24.2620)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F148A #7F8A14

analogous

#14448A #1F148A #5A148A

triadic

#1F148A #8A1F14 #148A1F

tetradic

#1F148A #8A1444 #7F8A14 #148A5A

square

#1F148A #8A1444 #7F8A14 #148A5A

split-complementary

#1F148A #8A5A14 #448A14

monochromatic

#07051F #130C55 #1F148A #2B1CBF #4636E2

Accessibility & contrast

On white

13.77

#1F148A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F148A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F148A

13.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F148A	#FFFFFF	#000000	##FFFFFF
##1F148A	1.00	13.77	1.53	13.77
#FFFFFF	13.77	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328D

Deuteranopia (green-blind)

#002788

Tritanopia (blue-blind)

#003A51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f148a;
/* rgb */ color: rgb(31, 20, 138);
/* oklch */ color: oklch(31.7% 0.179 273.3);

Tailwind

colors: {
  custom: {
    50: '#6f56ad',
    500: '#1f148a',
    950: '#000000',
  },
}

SCSS

$custom: #1f148a;
$custom-light: #6f56ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f148a",
  "rgb": {
    "r": 31,
    "g": 20,
    "b": 138
  },
  "hsl": {
    "h": 245.593,
    "s": 74.684,
    "l": 30.98
  },
  "oklch": {
    "l": 0.31667,
    "c": 0.17904,
    "h": 273.3
  },
  "luminance": 0.02627
}

Semantic roles & 50–950 ramp

primary

#1F148A

secondary

#B2BE3C

accent

#F136E0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1F148A

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

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