#1F106D#1F106D

#1F106D is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.7% C 0.147 H 278.1°. Best body text is #FFFFFF at 15.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F106D
RGB	rgb(31, 16, 109)
HSL	hsl(250, 74%, 25%)
HSV	hsv(250, 85%, 43%)
CMYK	cmyk(71.6%, 85.3%, 0%, 57.3%)
CIE-LAB	lab(14.21, 36.30, -50.34)
CIE-LCH	lch(14.21, 62.06, 305.80°)
OKLab	oklab(27.67% 0.0207 -0.1454)
OKLCH	oklch(27.67% 0.147 278.1)
XYZ	xyz(3.5098, 1.7657, 14.6209)
Luminance	0.0177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F106D #5E6D10

analogous

#10306D #1F106D #4D106D

triadic

#1F106D #6D1F10 #106D1F

tetradic

#1F106D #6D1030 #5E6D10 #106D4D

square

#1F106D #6D1030 #5E6D10 #106D4D

split-complementary

#1F106D #6D4D10 #306D10

monochromatic

#08041B #100838 #1F106D #2E18A2 #3D20D8

Accessibility & contrast

On white

15.52

#1F106D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1F106D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F106D

15.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F106D	#FFFFFF	#000000	##FFFFFF
##1F106D	1.00	15.52	1.35	15.52
#FFFFFF	15.52	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002870

Deuteranopia (green-blind)

#00206B

Tritanopia (blue-blind)

#002D3F

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1f106d;
/* rgb */ color: rgb(31, 16, 109);
/* oklch */ color: oklch(27.7% 0.147 278.1);

Tailwind

colors: {
  custom: {
    50: '#685298',
    500: '#1f106d',
    950: '#000000',
  },
}

SCSS

$custom: #1f106d;
$custom-light: #685298;
$custom-dark: #000000;

JSON

{
  "hex": "#1f106d",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 109
  },
  "hsl": {
    "h": 249.677,
    "s": 74.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.27669,
    "c": 0.14687,
    "h": 278.1
  },
  "luminance": 0.01766
}

Semantic roles & 50–950 ramp

primary

#1F106D

secondary

#93A534

accent

#F137D3

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1F106D

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

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