#1F175D#1F175D

#1F175D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.8% C 0.118 H 280.0°. Best body text is #FFFFFF at 15.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F175D
RGB	rgb(31, 23, 93)
HSL	hsl(247, 60%, 23%)
HSV	hsv(247, 75%, 36%)
CMYK	cmyk(66.7%, 75.3%, 0%, 63.5%)
CIE-LAB	lab(13.79, 26.86, -40.44)
CIE-LCH	lch(13.79, 48.54, 303.59°)
OKLab	oklab(26.84% 0.0205 -0.1166)
OKLCH	oklch(26.84% 0.118 280)
XYZ	xyz(2.8466, 1.6942, 10.5308)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F175D #555D17

analogous

#17325D #1F175D #42175D

triadic

#1F175D #5D1F17 #175D1F

tetradic

#1F175D #5D1732 #555D17 #175D42

square

#1F175D #5D1732 #555D17 #175D42

split-complementary

#1F175D #5D4217 #325D17

monochromatic

#080619 #0F0B2C #1F175D #2F238E #402FBF

Accessibility & contrast

On white

15.69

#1F175D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#1F175D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F175D

15.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F175D	#FFFFFF	#000000	##FFFFFF
##1F175D	1.00	15.69	1.34	15.69
#FFFFFF	15.69	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265F

Deuteranopia (green-blind)

#00205C

Tritanopia (blue-blind)

#002A38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1f175d;
/* rgb */ color: rgb(31, 23, 93);
/* oklch */ color: oklch(26.8% 0.118 280.0);

Tailwind

colors: {
  custom: {
    50: '#64558c',
    500: '#1f175d',
    950: '#000000',
  },
}

SCSS

$custom: #1f175d;
$custom-light: #64558c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f175d",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 93
  },
  "hsl": {
    "h": 246.857,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.26837,
    "c": 0.1184,
    "h": 280
  },
  "luminance": 0.01694
}

Semantic roles & 50–950 ramp

primary

#1F175D

secondary

#8A943C

accent

#E344D1

background

#F6F5F8

surface

#EBE8F0

border

#C6C4CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1F175D

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

Preview Lab → · Contrast checker → · Palette generator →