#1F107E#1F107E

#1F107E is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.168 H 275.2°. Best body text is #FFFFFF at 14.65:1 contrast (WCAG AA passes).

Color values

HEX	#1F107E
RGB	rgb(31, 16, 126)
HSL	hsl(248, 77%, 28%)
HSV	hsv(248, 87%, 49%)
CMYK	cmyk(75.4%, 87.3%, 0%, 50.6%)
CIE-LAB	lab(16.34, 41.67, -57.76)
CIE-LCH	lch(16.34, 71.22, 305.81°)
OKLab	oklab(29.76% 0.0152 -0.1669)
OKLCH	oklch(29.76% 0.168 275.2)
XYZ	xyz(4.5150, 2.1678, 19.9151)
Luminance	0.0217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F107E #6F7E10

analogous

#10387E #1F107E #56107E

triadic

#1F107E #7E1F10 #107E1F

tetradic

#1F107E #7E1038 #6F7E10 #107E56

square

#1F107E #7E1038 #6F7E10 #107E56

split-complementary

#1F107E #7E5610 #387E10

monochromatic

#07031B #120948 #1F107E #2C17B4 #3F25E3

Accessibility & contrast

On white

14.65

#1F107E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1F107E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F107E

14.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F107E	#FFFFFF	#000000	##FFFFFF
##1F107E	1.00	14.65	1.43	14.65
#FFFFFF	14.65	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D81

Deuteranopia (green-blind)

#00237C

Tritanopia (blue-blind)

#003449

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1f107e;
/* rgb */ color: rgb(31, 16, 126);
/* oklch */ color: oklch(29.8% 0.168 275.2);

Tailwind

colors: {
  custom: {
    50: '#6d53a5',
    500: '#1f107e',
    950: '#000000',
  },
}

SCSS

$custom: #1f107e;
$custom-light: #6d53a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f107e",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 126
  },
  "hsl": {
    "h": 248.182,
    "s": 77.465,
    "l": 27.843
  },
  "oklch": {
    "l": 0.2976,
    "c": 0.16764,
    "h": 275.2
  },
  "luminance": 0.02168
}

Semantic roles & 50–950 ramp

primary

#1F107E

secondary

#A3B436

accent

#F434DA

background

#F7F4FA

surface

#EDE8F4

border

#C8C4CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F107E

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

Preview Lab → · Contrast checker → · Palette generator →