#1B107F#1B107F

#1B107F is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.6% C 0.170 H 273.1°. Best body text is #FFFFFF at 14.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B107F
RGB	rgb(27, 16, 127)
HSL	hsl(246, 78%, 28%)
HSV	hsv(246, 87%, 50%)
CMYK	cmyk(78.7%, 87.4%, 0%, 50.2%)
CIE-LAB	lab(16.18, 41.72, -58.68)
CIE-LCH	lch(16.18, 72.00, 305.41°)
OKLab	oklab(29.61% 0.0092 -0.1697)
OKLCH	oklch(29.61% 0.17 273.1)
XYZ	xyz(4.4668, 2.1354, 20.2513)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B107F #747F10

analogous

#103C7F #1B107F #52107F

triadic

#1B107F #7F1B10 #107F1B

tetradic

#1B107F #7F103C #747F10 #107F52

square

#1B107F #7F103C #747F10 #107F52

split-complementary

#1B107F #7F5210 #3C7F10

monochromatic

#06031B #0F0949 #1B107F #2717B5 #3926E4

Accessibility & contrast

On white

14.71

#1B107F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1B107F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B107F

14.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B107F	#FFFFFF	#000000	##FFFFFF
##1B107F	1.00	14.71	1.43	14.71
#FFFFFF	14.71	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D82

Deuteranopia (green-blind)

#00237D

Tritanopia (blue-blind)

#00354A

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b107f;
/* rgb */ color: rgb(27, 16, 127);
/* oklch */ color: oklch(29.6% 0.170 273.1);

Tailwind

colors: {
  custom: {
    50: '#6b53a5',
    500: '#1b107f',
    950: '#000000',
  },
}

SCSS

$custom: #1b107f;
$custom-light: #6b53a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b107f",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 127
  },
  "hsl": {
    "h": 245.946,
    "s": 77.622,
    "l": 28.039
  },
  "oklch": {
    "l": 0.2961,
    "c": 0.16993,
    "h": 273.1
  },
  "luminance": 0.02136
}

Semantic roles & 50–950 ramp

primary

#1B107F

secondary

#A9B536

accent

#F434E1

background

#F7F4FA

surface

#EDE7F4

border

#C8C3CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B107F

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

Preview Lab → · Contrast checker → · Palette generator →