#1F117D#1F117D

#1F117D is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.7% C 0.166 H 275.3°. Best body text is #FFFFFF at 14.64:1 contrast (WCAG AA passes).

Color values

HEX	#1F117D
RGB	rgb(31, 17, 125)
HSL	hsl(248, 76%, 28%)
HSV	hsv(248, 86%, 49%)
CMYK	cmyk(75.2%, 86.4%, 0%, 51%)
CIE-LAB	lab(16.37, 40.91, -57.09)
CIE-LCH	lch(16.37, 70.23, 305.63°)
OKLab	oklab(29.74% 0.0152 -0.165)
OKLCH	oklch(29.74% 0.166 275.3)
XYZ	xyz(4.4660, 2.1724, 19.5820)
Luminance	0.0217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F117D #6F7D11

analogous

#11397D #1F117D #55117D

triadic

#1F117D #7D1F11 #117D1F

tetradic

#1F117D #7D1139 #6F7D11 #117D55

square

#1F117D #7D1139 #6F7D11 #117D55

split-complementary

#1F117D #7D5511 #397D11

monochromatic

#07041B #120A47 #1F117D #2C18B3 #3F27E2

Accessibility & contrast

On white

14.64

#1F117D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1F117D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F117D

14.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F117D	#FFFFFF	#000000	##FFFFFF
##1F117D	1.00	14.64	1.43	14.64
#FFFFFF	14.64	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D80

Deuteranopia (green-blind)

#00247B

Tritanopia (blue-blind)

#003449

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f117d;
/* rgb */ color: rgb(31, 17, 125);
/* oklch */ color: oklch(29.7% 0.166 275.3);

Tailwind

colors: {
  custom: {
    50: '#6c54a4',
    500: '#1f117d',
    950: '#000000',
  },
}

SCSS

$custom: #1f117d;
$custom-light: #6c54a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f117d",
  "rgb": {
    "r": 31,
    "g": 17,
    "b": 125
  },
  "hsl": {
    "h": 247.778,
    "s": 76.056,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29739,
    "c": 0.16571,
    "h": 275.3
  },
  "luminance": 0.02173
}

Semantic roles & 50–950 ramp

primary

#1F117D

secondary

#A3B337

accent

#F335DA

background

#F7F4FA

surface

#EDE8F4

border

#C8C4CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F117D

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

Preview Lab → · Contrast checker → · Palette generator →