#1B2875#1B2875

#1B2875 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.1% C 0.132 H 269.8°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B2875
RGB	rgb(27, 40, 117)
HSL	hsl(231, 63%, 28%)
HSV	hsv(231, 77%, 46%)
CMYK	cmyk(76.9%, 65.8%, 0%, 54.1%)
CIE-LAB	lab(20.18, 23.86, -45.69)
CIE-LCH	lch(20.18, 51.54, 297.57°)
OKLab	oklab(32.13% -0.0005 -0.132)
OKLCH	oklch(32.13% 0.132 269.8)
XYZ	xyz(4.4206, 3.0345, 17.1789)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2875 #75681B

analogous

#1B5575 #1B2875 #3B1B75

triadic

#1B2875 #751B28 #28751B

tetradic

#1B2875 #751B55 #75681B #1B753B

square

#1B2875 #751B55 #75681B #1B753B

split-complementary

#1B2875 #753B1B #55751B

monochromatic

#060919 #101743 #1B2875 #2639A7 #394FD1

Accessibility & contrast

On white

13.07

#1B2875 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1B2875 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2875

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2875	#FFFFFF	#000000	##FFFFFF
##1B2875	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003577

Deuteranopia (green-blind)

#002D74

Tritanopia (blue-blind)

#003C4A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2875;
/* rgb */ color: rgb(27, 40, 117);
/* oklch */ color: oklch(32.1% 0.132 269.8);

Tailwind

colors: {
  custom: {
    50: '#66619e',
    500: '#1b2875',
    950: '#000000',
  },
}

SCSS

$custom: #1b2875;
$custom-light: #66619e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2875",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 117
  },
  "hsl": {
    "h": 231.333,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32131,
    "c": 0.13204,
    "h": 269.8
  },
  "luminance": 0.03035
}

Semantic roles & 50–950 ramp

primary

#1B2875

secondary

#A99B42

accent

#CE42E6

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1B2875

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

Preview Lab → · Contrast checker → · Palette generator →