#1B405E#1B405E

#1B405E is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.0% C 0.067 H 245.7°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B405E
RGB	rgb(27, 64, 94)
HSL	hsl(207, 55%, 24%)
HSV	hsv(207, 71%, 37%)
CMYK	cmyk(71.3%, 31.9%, 0%, 63.1%)
CIE-LAB	lab(25.88, -2.31, -21.69)
CIE-LCH	lch(25.88, 21.81, 263.93°)
OKLab	oklab(35.97% -0.0276 -0.0612)
OKLCH	oklch(35.97% 0.067 245.7)
XYZ	xyz(4.3050, 4.7075, 11.2693)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B405E #5E391B

analogous

#1B5E5A #1B405E #1B1E5E

triadic

#1B405E #5E1B40 #405E1B

tetradic

#1B405E #5A1B5E #5E391B #1E5E1B

square

#1B405E #5A1B5E #5E391B #1E5E1B

split-complementary

#1B405E #5E1B1E #5E5A1B

monochromatic

#071018 #0D202E #1B405E #29608E #3681BD

Accessibility & contrast

On white

10.82

#1B405E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1B405E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B405E

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B405E	#FFFFFF	#000000	##FFFFFF
##1B405E	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33415F

Deuteranopia (green-blind)

#293A5D

Tritanopia (blue-blind)

#00474B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b405e;
/* rgb */ color: rgb(27, 64, 94);
/* oklch */ color: oklch(36.0% 0.067 245.7);

Tailwind

colors: {
  custom: {
    50: '#60748c',
    500: '#1b405e',
    950: '#000000',
  },
}

SCSS

$custom: #1b405e;
$custom-light: #60748c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b405e",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 94
  },
  "hsl": {
    "h": 206.866,
    "s": 55.372,
    "l": 23.725
  },
  "oklch": {
    "l": 0.3597,
    "c": 0.06719,
    "h": 245.7
  },
  "luminance": 0.04708
}

Semantic roles & 50–950 ramp

primary

#1B405E

secondary

#946641

accent

#8C49DF

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B405E

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

Preview Lab → · Contrast checker → · Palette generator →