#1F157A#1F157A

#1F157A is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.159 H 275.3°. Best body text is #FFFFFF at 14.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F157A
RGB	rgb(31, 21, 122)
HSL	hsl(246, 71%, 28%)
HSV	hsv(246, 83%, 48%)
CMYK	cmyk(74.6%, 82.8%, 0%, 52.2%)
CIE-LAB	lab(16.66, 37.99, -54.68)
CIE-LCH	lch(16.66, 66.58, 304.79°)
OKLab	oklab(29.84% 0.0146 -0.1581)
OKLCH	oklch(29.84% 0.159 275.3)
XYZ	xyz(4.3449, 2.2324, 18.6105)
Luminance	0.0223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F157A #707A15

analogous

#153D7A #1F157A #52157A

triadic

#1F157A #7A1F15 #157A1F

tetradic

#1F157A #7A153D #707A15 #157A52

square

#1F157A #7A153D #707A15 #157A52

split-complementary

#1F157A #7A5215 #3D7A15

monochromatic

#07041A #120C46 #1F157A #2C1EAE #3F2EDB

Accessibility & contrast

On white

14.52

#1F157A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1F157A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F157A

14.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F157A	#FFFFFF	#000000	##FFFFFF
##1F157A	1.00	14.52	1.45	14.52
#FFFFFF	14.52	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7D

Deuteranopia (green-blind)

#002578

Tritanopia (blue-blind)

#003448

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f157a;
/* rgb */ color: rgb(31, 21, 122);
/* oklch */ color: oklch(29.8% 0.159 275.3);

Tailwind

colors: {
  custom: {
    50: '#6b55a2',
    500: '#1f157a',
    950: '#000000',
  },
}

SCSS

$custom: #1f157a;
$custom-light: #6b55a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f157a",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 122
  },
  "hsl": {
    "h": 245.941,
    "s": 70.629,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29835,
    "c": 0.15877,
    "h": 275.3
  },
  "luminance": 0.02233
}

Semantic roles & 50–950 ramp

primary

#1F157A

secondary

#A4AF3B

accent

#ED3ADC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F157A

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

Preview Lab → · Contrast checker → · Palette generator →