#1F107F#1F107F

#1F107F is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.9% C 0.169 H 275.1°. Best body text is #FFFFFF at 14.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F107F
RGB	rgb(31, 16, 127)
HSL	hsl(248, 78%, 28%)
HSV	hsv(248, 87%, 50%)
CMYK	cmyk(75.6%, 87.4%, 0%, 50.2%)
CIE-LAB	lab(16.47, 41.98, -58.19)
CIE-LCH	lch(16.47, 71.75, 305.81°)
OKLab	oklab(29.89% 0.0149 -0.1682)
OKLCH	oklch(29.89% 0.169 275.1)
XYZ	xyz(4.5799, 2.1937, 20.2566)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F107F #707F10

analogous

#10387F #1F107F #56107F

triadic

#1F107F #7F1F10 #107F1F

tetradic

#1F107F #7F1038 #707F10 #107F56

square

#1F107F #7F1038 #707F10 #107F56

split-complementary

#1F107F #7F5610 #387F10

monochromatic

#07031B #120949 #1F107F #2C17B5 #3F26E4

Accessibility & contrast

On white

14.60

#1F107F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1F107F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F107F

14.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F107F	#FFFFFF	#000000	##FFFFFF
##1F107F	1.00	14.60	1.44	14.60
#FFFFFF	14.60	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D82

Deuteranopia (green-blind)

#00247D

Tritanopia (blue-blind)

#00354A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f107f;
/* rgb */ color: rgb(31, 16, 127);
/* oklch */ color: oklch(29.9% 0.169 275.1);

Tailwind

colors: {
  custom: {
    50: '#6d53a5',
    500: '#1f107f',
    950: '#000000',
  },
}

SCSS

$custom: #1f107f;
$custom-light: #6d53a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f107f",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 127
  },
  "hsl": {
    "h": 248.108,
    "s": 77.622,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29885,
    "c": 0.16884,
    "h": 275.1
  },
  "luminance": 0.02194
}

Semantic roles & 50–950 ramp

primary

#1F107F

secondary

#A4B536

accent

#F434DA

background

#F7F4FA

surface

#EDE8F4

border

#C8C4CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F107F

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

Preview Lab → · Contrast checker → · Palette generator →