#1B2673#1B2673

#1B2673 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.5% C 0.132 H 270.4°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B2673
RGB	rgb(27, 38, 115)
HSL	hsl(233, 62%, 28%)
HSV	hsv(233, 77%, 45%)
CMYK	cmyk(76.5%, 67%, 0%, 54.9%)
CIE-LAB	lab(19.46, 24.46, -45.59)
CIE-LCH	lch(19.46, 51.73, 298.22°)
OKLab	oklab(31.54% 0.001 -0.1317)
OKLCH	oklch(31.54% 0.132 270.4)
XYZ	xyz(4.2386, 2.8566, 16.5443)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2673 #73681B

analogous

#1B5273 #1B2673 #3C1B73

triadic

#1B2673 #731B26 #26731B

tetradic

#1B2673 #731B52 #73681B #1B733C

square

#1B2673 #731B52 #73681B #1B733C

split-complementary

#1B2673 #733C1B #52731B

monochromatic

#060819 #0F1641 #1B2673 #2736A5 #384BD0

Accessibility & contrast

On white

13.36

#1B2673 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B2673 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2673

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2673	#FFFFFF	#000000	##FFFFFF
##1B2673	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003375

Deuteranopia (green-blind)

#002B72

Tritanopia (blue-blind)

#003A48

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2673;
/* rgb */ color: rgb(27, 38, 115);
/* oklch */ color: oklch(31.5% 0.132 270.4);

Tailwind

colors: {
  custom: {
    50: '#66609c',
    500: '#1b2673',
    950: '#000000',
  },
}

SCSS

$custom: #1b2673;
$custom-light: #66609c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2673",
  "rgb": {
    "r": 27,
    "g": 38,
    "b": 115
  },
  "hsl": {
    "h": 232.5,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.31542,
    "c": 0.13175,
    "h": 270.4
  },
  "luminance": 0.02857
}

Semantic roles & 50–950 ramp

primary

#1B2673

secondary

#A89B42

accent

#D143E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2673

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

Preview Lab → · Contrast checker → · Palette generator →