#1B345C#1B345C

#1B345C is a dark, moderate blue. Relative luminance 0.035; OKLCH L 32.7% C 0.078 H 259.4°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#1B345C
RGB	rgb(27, 52, 92)
HSL	hsl(217, 55%, 23%)
HSV	hsv(217, 71%, 36%)
CMYK	cmyk(70.7%, 43.5%, 0%, 63.9%)
CIE-LAB	lab(21.80, 5.14, -26.83)
CIE-LCH	lch(21.80, 27.32, 280.85°)
OKLab	oklab(32.74% -0.0143 -0.0764)
OKLCH	oklch(32.74% 0.078 259.4)
XYZ	xyz(3.6111, 3.4613, 10.6009)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B345C #5C431B

analogous

#1B545C #1B345C #221B5C

triadic

#1B345C #5C1B34 #345C1B

tetradic

#1B345C #5C1B54 #5C431B #1B5C22

square

#1B345C #5C1B54 #5C431B #1B5C22

split-complementary

#1B345C #5C221B #545C1B

monochromatic

#070D18 #0D192D #1B345C #294F8B #3769BB

Accessibility & contrast

On white

12.41

#1B345C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B345C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B345C

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B345C	#FFFFFF	#000000	##FFFFFF
##1B345C	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22385E

Deuteranopia (green-blind)

#18315B

Tritanopia (blue-blind)

#003D43

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b345c;
/* rgb */ color: rgb(27, 52, 92);
/* oklch */ color: oklch(32.7% 0.078 259.4);

Tailwind

colors: {
  custom: {
    50: '#5f6b8a',
    500: '#1b345c',
    950: '#000000',
  },
}

SCSS

$custom: #1b345c;
$custom-light: #5f6b8a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b345c",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 92
  },
  "hsl": {
    "h": 216.923,
    "s": 54.622,
    "l": 23.333
  },
  "oklch": {
    "l": 0.32741,
    "c": 0.07775,
    "h": 259.4
  },
  "luminance": 0.03462
}

Semantic roles & 50–950 ramp

primary

#1B345C

secondary

#927341

accent

#A54ADE

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #1B345C

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

Preview Lab → · Contrast checker → · Palette generator →