#1F106F#1F106F

#1F106F is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.9% C 0.149 H 277.7°. Best body text is #FFFFFF at 15.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F106F
RGB	rgb(31, 16, 111)
HSL	hsl(249, 75%, 25%)
HSV	hsv(249, 86%, 44%)
CMYK	cmyk(72.1%, 85.6%, 0%, 56.5%)
CIE-LAB	lab(14.45, 36.94, -51.23)
CIE-LCH	lch(14.45, 63.16, 305.80°)
OKLab	oklab(27.91% 0.0201 -0.148)
OKLCH	oklch(27.91% 0.149 277.7)
XYZ	xyz(3.6187, 1.8093, 15.1944)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F106F #606F10

analogous

#10306F #1F106F #4F106F

triadic

#1F106F #6F1F10 #106F1F

tetradic

#1F106F #6F1030 #606F10 #106F4F

square

#1F106F #6F1030 #606F10 #106F4F

split-complementary

#1F106F #6F4F10 #306F10

monochromatic

#07041B #10083A #1F106F #2E18A4 #3D1FDA

Accessibility & contrast

On white

15.42

#1F106F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1F106F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F106F

15.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F106F	#FFFFFF	#000000	##FFFFFF
##1F106F	1.00	15.42	1.36	15.42
#FFFFFF	15.42	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002872

Deuteranopia (green-blind)

#00216D

Tritanopia (blue-blind)

#002E40

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1f106f;
/* rgb */ color: rgb(31, 16, 111);
/* oklch */ color: oklch(27.9% 0.149 277.7);

Tailwind

colors: {
  custom: {
    50: '#695299',
    500: '#1f106f',
    950: '#000000',
  },
}

SCSS

$custom: #1f106f;
$custom-light: #695299;
$custom-dark: #000000;

JSON

{
  "hex": "#1f106f",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 111
  },
  "hsl": {
    "h": 249.474,
    "s": 74.803,
    "l": 24.902
  },
  "oklch": {
    "l": 0.27911,
    "c": 0.14936,
    "h": 277.7
  },
  "luminance": 0.0181
}

Semantic roles & 50–950 ramp

primary

#1F106F

secondary

#95A734

accent

#F136D4

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1F106F

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

Preview Lab → · Contrast checker → · Palette generator →