#1B405F#1B405F

#1B405F is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.0% C 0.069 H 246.5°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B405F
RGB	rgb(27, 64, 95)
HSL	hsl(207, 56%, 24%)
HSV	hsv(207, 72%, 37%)
CMYK	cmyk(71.6%, 32.6%, 0%, 62.7%)
CIE-LAB	lab(25.94, -1.92, -22.25)
CIE-LCH	lch(25.94, 22.33, 265.08°)
OKLab	oklab(36.03% -0.0273 -0.0629)
OKLCH	oklch(36.03% 0.069 246.5)
XYZ	xyz(4.3502, 4.7256, 11.5071)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B405F #5F3A1B

analogous

#1B5F5C #1B405F #1B1E5F

triadic

#1B405F #5F1B40 #405F1B

tetradic

#1B405F #5C1B5F #5F3A1B #1E5F1B

square

#1B405F #5C1B5F #5F3A1B #1E5F1B

split-complementary

#1B405F #5F1B1E #5F5C1B

monochromatic

#071018 #0D202F #1B405F #29608F #3680BE

Accessibility & contrast

On white

10.80

#1B405F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1B405F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B405F

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B405F	#FFFFFF	#000000	##FFFFFF
##1B405F	1.00	10.80	1.95	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324160

Deuteranopia (green-blind)

#293A5E

Tritanopia (blue-blind)

#00474B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b405f;
/* rgb */ color: rgb(27, 64, 95);
/* oklch */ color: oklch(36.0% 0.069 246.5);

Tailwind

colors: {
  custom: {
    50: '#60748c',
    500: '#1b405f',
    950: '#000000',
  },
}

SCSS

$custom: #1b405f;
$custom-light: #60748c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b405f",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 95
  },
  "hsl": {
    "h": 207.353,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.3603,
    "c": 0.06855,
    "h": 246.5
  },
  "luminance": 0.04726
}

Semantic roles & 50–950 ramp

primary

#1B405F

secondary

#956741

accent

#8D49DF

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B405F

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

Preview Lab → · Contrast checker → · Palette generator →