#1F157D#1F157D

#1F157D is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.2% C 0.162 H 274.8°. Best body text is #FFFFFF at 14.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F157D
RGB	rgb(31, 21, 125)
HSL	hsl(246, 71%, 29%)
HSV	hsv(246, 83%, 49%)
CMYK	cmyk(75.2%, 83.2%, 0%, 51%)
CIE-LAB	lab(17.03, 38.98, -55.99)
CIE-LCH	lch(17.03, 68.22, 304.84°)
OKLab	oklab(30.2% 0.0137 -0.1619)
OKLCH	oklch(30.2% 0.162 274.8)
XYZ	xyz(4.5337, 2.3079, 19.6046)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F157D #737D15

analogous

#153F7D #1F157D #53157D

triadic

#1F157D #7D1F15 #157D1F

tetradic

#1F157D #7D153F #737D15 #157D53

square

#1F157D #7D153F #737D15 #157D53

split-complementary

#1F157D #7D5315 #3F7D15

monochromatic

#06041A #120C49 #1F157D #2C1EB1 #4130DC

Accessibility & contrast

On white

14.37

#1F157D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1F157D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F157D

14.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F157D	#FFFFFF	#000000	##FFFFFF
##1F157D	1.00	14.37	1.46	14.37
#FFFFFF	14.37	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E80

Deuteranopia (green-blind)

#00257B

Tritanopia (blue-blind)

#00354A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f157d;
/* rgb */ color: rgb(31, 21, 125);
/* oklch */ color: oklch(30.2% 0.162 274.8);

Tailwind

colors: {
  custom: {
    50: '#6c56a4',
    500: '#1f157d',
    950: '#000000',
  },
}

SCSS

$custom: #1f157d;
$custom-light: #6c56a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f157d",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 125
  },
  "hsl": {
    "h": 245.769,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30195,
    "c": 0.16249,
    "h": 274.8
  },
  "luminance": 0.02308
}

Semantic roles & 50–950 ramp

primary

#1F157D

secondary

#A7B23C

accent

#EE3ADD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F157D

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

Preview Lab → · Contrast checker → · Palette generator →