#1F157F#1F157F

#1F157F is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.165 H 274.6°. Best body text is #FFFFFF at 14.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F157F
RGB	rgb(31, 21, 127)
HSL	hsl(246, 72%, 29%)
HSV	hsv(246, 83%, 50%)
CMYK	cmyk(75.6%, 83.5%, 0%, 50.2%)
CIE-LAB	lab(17.27, 39.63, -56.86)
CIE-LCH	lch(17.27, 69.31, 304.87°)
OKLab	oklab(30.44% 0.0132 -0.1644)
OKLCH	oklch(30.44% 0.165 274.6)
XYZ	xyz(4.6627, 2.3595, 20.2842)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F157F #757F15

analogous

#15407F #1F157F #54157F

triadic

#1F157F #7F1F15 #157F1F

tetradic

#1F157F #7F1540 #757F15 #157F54

square

#1F157F #7F1540 #757F15 #157F54

split-complementary

#1F157F #7F5415 #407F15

monochromatic

#06041A #120C4A #1F157F #2C1EB4 #4231DD

Accessibility & contrast

On white

14.27

#1F157F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1F157F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F157F

14.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F157F	#FFFFFF	#000000	##FFFFFF
##1F157F	1.00	14.27	1.47	14.27
#FFFFFF	14.27	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F82

Deuteranopia (green-blind)

#00267D

Tritanopia (blue-blind)

#00364B

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f157f;
/* rgb */ color: rgb(31, 21, 127);
/* oklch */ color: oklch(30.4% 0.165 274.6);

Tailwind

colors: {
  custom: {
    50: '#6c56a5',
    500: '#1f157f',
    950: '#000000',
  },
}

SCSS

$custom: #1f157f;
$custom-light: #6c56a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f157f",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 127
  },
  "hsl": {
    "h": 245.66,
    "s": 71.622,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30435,
    "c": 0.16496,
    "h": 274.6
  },
  "luminance": 0.0236
}

Semantic roles & 50–950 ramp

primary

#1F157F

secondary

#A9B43C

accent

#EE39DD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F157F

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

Preview Lab → · Contrast checker → · Palette generator →