#1F106C#1F106C

#1F106C is a dark, vivid blue. Relative luminance 0.017; OKLCH L 27.5% C 0.146 H 278.3°. Best body text is #FFFFFF at 15.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F106C
RGB	rgb(31, 16, 108)
HSL	hsl(250, 74%, 24%)
HSV	hsv(250, 85%, 42%)
CMYK	cmyk(71.3%, 85.2%, 0%, 57.6%)
CIE-LAB	lab(14.08, 35.98, -49.89)
CIE-LCH	lch(14.08, 61.51, 305.80°)
OKLab	oklab(27.55% 0.0211 -0.1441)
OKLCH	oklch(27.55% 0.146 278.3)
XYZ	xyz(3.4563, 1.7443, 14.3390)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F106C #5D6C10

analogous

#102F6C #1F106C #4D106C

triadic

#1F106C #6C1F10 #106C1F

tetradic

#1F106C #6C102F #5D6C10 #106C4D

square

#1F106C #6C102F #5D6C10 #106C4D

split-complementary

#1F106C #6C4D10 #2F6C10

monochromatic

#08041B #100837 #1F106C #2E18A1 #3E20D7

Accessibility & contrast

On white

15.57

#1F106C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1F106C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F106C

15.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F106C	#FFFFFF	#000000	##FFFFFF
##1F106C	1.00	15.57	1.35	15.57
#FFFFFF	15.57	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00276F

Deuteranopia (green-blind)

#00206A

Tritanopia (blue-blind)

#002D3F

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1f106c;
/* rgb */ color: rgb(31, 16, 108);
/* oklch */ color: oklch(27.5% 0.146 278.3);

Tailwind

colors: {
  custom: {
    50: '#685297',
    500: '#1f106c',
    950: '#000000',
  },
}

SCSS

$custom: #1f106c;
$custom-light: #685297;
$custom-dark: #000000;

JSON

{
  "hex": "#1f106c",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 108
  },
  "hsl": {
    "h": 249.783,
    "s": 74.194,
    "l": 24.314
  },
  "oklch": {
    "l": 0.27548,
    "c": 0.14562,
    "h": 278.3
  },
  "luminance": 0.01745
}

Semantic roles & 50–950 ramp

primary

#1F106C

secondary

#92A434

accent

#F137D3

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1F106C

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

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