#1B445F#1B445F

#1B445F is a dark, moderate cyan. Relative luminance 0.052; OKLCH L 37.1% C 0.065 H 240.6°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B445F
RGB	rgb(27, 68, 95)
HSL	hsl(204, 56%, 24%)
HSV	hsv(204, 72%, 37%)
CMYK	cmyk(71.6%, 28.4%, 0%, 62.7%)
CIE-LAB	lab(27.28, -4.54, -20.15)
CIE-LCH	lch(27.28, 20.66, 257.30°)
OKLab	oklab(37.09% -0.032 -0.0568)
OKLCH	oklch(37.09% 0.065 240.6)
XYZ	xyz(4.5839, 5.1930, 11.5850)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B445F #5F361B

analogous

#1B5F58 #1B445F #1B225F

triadic

#1B445F #5F1B44 #445F1B

tetradic

#1B445F #581B5F #5F361B #225F1B

square

#1B445F #581B5F #5F361B #225F1B

split-complementary

#1B445F #5F1B22 #5F581B

monochromatic

#071118 #0D222F #1B445F #29668F #3688BE

Accessibility & contrast

On white

10.30

#1B445F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1B445F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B445F

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B445F	#FFFFFF	#000000	##FFFFFF
##1B445F	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384460

Deuteranopia (green-blind)

#2E3D5F

Tritanopia (blue-blind)

#004B4D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b445f;
/* rgb */ color: rgb(27, 68, 95);
/* oklch */ color: oklch(37.1% 0.065 240.6);

Tailwind

colors: {
  custom: {
    50: '#60778c',
    500: '#1b445f',
    950: '#000000',
  },
}

SCSS

$custom: #1b445f;
$custom-light: #60778c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b445f",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 95
  },
  "hsl": {
    "h": 203.824,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.37088,
    "c": 0.06515,
    "h": 240.6
  },
  "luminance": 0.05193
}

Semantic roles & 50–950 ramp

primary

#1B445F

secondary

#956241

accent

#8449DF

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B445F

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

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