#1F155D#1F155D

#1F155D is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.5% C 0.121 H 280.6°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#1F155D
RGB	rgb(31, 21, 93)
HSL	hsl(248, 63%, 22%)
HSV	hsv(248, 77%, 36%)
CMYK	cmyk(66.7%, 77.4%, 0%, 63.5%)
CIE-LAB	lab(13.34, 28.12, -41.19)
CIE-LCH	lch(13.34, 49.87, 304.33°)
OKLab	oklab(26.51% 0.0221 -0.1188)
OKLCH	oklch(26.51% 0.121 280.6)
XYZ	xyz(2.8084, 1.6177, 10.5181)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F155D #535D15

analogous

#152F5D #1F155D #43155D

triadic

#1F155D #5D1F15 #155D1F

tetradic

#1F155D #5D152F #535D15 #155D43

square

#1F155D #5D152F #535D15 #155D43

split-complementary

#1F155D #5D4315 #2F5D15

monochromatic

#080619 #0E0A2B #1F155D #30208F #402CC1

Accessibility & contrast

On white

15.87

#1F155D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#1F155D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F155D

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F155D	#FFFFFF	#000000	##FFFFFF
##1F155D	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255F

Deuteranopia (green-blind)

#00205C

Tritanopia (blue-blind)

#002937

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1f155d;
/* rgb */ color: rgb(31, 21, 93);
/* oklch */ color: oklch(26.5% 0.121 280.6);

Tailwind

colors: {
  custom: {
    50: '#64548c',
    500: '#1f155d',
    950: '#000000',
  },
}

SCSS

$custom: #1f155d;
$custom-light: #64548c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f155d",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 93
  },
  "hsl": {
    "h": 248.333,
    "s": 63.158,
    "l": 22.353
  },
  "oklch": {
    "l": 0.26512,
    "c": 0.12084,
    "h": 280.6
  },
  "luminance": 0.01618
}

Semantic roles & 50–950 ramp

primary

#1F155D

secondary

#889439

accent

#E642CF

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F155D

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

Preview Lab → · Contrast checker → · Palette generator →