#1B345F#1B345F

#1B345F is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.0% C 0.082 H 260.5°. Best body text is #FFFFFF at 12.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B345F
RGB	rgb(27, 52, 95)
HSL	hsl(218, 56%, 24%)
HSV	hsv(218, 72%, 37%)
CMYK	cmyk(71.6%, 45.3%, 0%, 62.7%)
CIE-LAB	lab(22.00, 6.35, -28.49)
CIE-LCH	lch(22.00, 29.19, 282.57°)
OKLab	oklab(32.95% -0.0136 -0.0813)
OKLCH	oklch(32.95% 0.082 260.5)
XYZ	xyz(3.7448, 3.5148, 11.3053)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B345F #5F461B

analogous

#1B565F #1B345F #241B5F

triadic

#1B345F #5F1B34 #345F1B

tetradic

#1B345F #5F1B56 #5F461B #1B5F24

square

#1B345F #5F1B56 #5F461B #1B5F24

split-complementary

#1B345F #5F241B #565F1B

monochromatic

#070D18 #0D1A2F #1B345F #294E8F #3668BE

Accessibility & contrast

On white

12.33

#1B345F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B345F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B345F

12.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B345F	#FFFFFF	#000000	##FFFFFF
##1B345F	1.00	12.33	1.70	12.33
#FFFFFF	12.33	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203861

Deuteranopia (green-blind)

#15325E

Tritanopia (blue-blind)

#003E44

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b345f;
/* rgb */ color: rgb(27, 52, 95);
/* oklch */ color: oklch(33.0% 0.082 260.5);

Tailwind

colors: {
  custom: {
    50: '#606b8d',
    500: '#1b345f',
    950: '#000000',
  },
}

SCSS

$custom: #1b345f;
$custom-light: #606b8d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b345f",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 95
  },
  "hsl": {
    "h": 217.941,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.32954,
    "c": 0.08242,
    "h": 260.5
  },
  "luminance": 0.03515
}

Semantic roles & 50–950 ramp

primary

#1B345F

secondary

#957641

accent

#A849DF

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #1B345F

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

Preview Lab → · Contrast checker → · Palette generator →