#1B394F#1B394F

#1B394F is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.2% C 0.053 H 242.5°. Best body text is #FFFFFF at 12.04:1 contrast (WCAG AA passes).

Color values

HEX	#1B394F
RGB	rgb(27, 57, 79)
HSL	hsl(205, 49%, 21%)
HSV	hsv(205, 66%, 31%)
CMYK	cmyk(65.8%, 27.8%, 0%, 69%)
CIE-LAB	lab(22.74, -3.42, -16.77)
CIE-LCH	lch(22.74, 17.11, 258.47°)
OKLab	oklab(33.23% -0.0245 -0.0471)
OKLCH	oklch(33.23% 0.053 242.5)
XYZ	xyz(3.3259, 3.7235, 7.9390)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B394F #4F311B

analogous

#1B4F4B #1B394F #1B1F4F

triadic

#1B394F #4F1B39 #394F1B

tetradic

#1B394F #4B1B4F #4F311B #1F4F1B

square

#1B394F #4B1B4F #4F311B #1F4F1B

split-complementary

#1B394F #4F1B1F #4F4B1B

monochromatic

#081017 #0B1821 #1B394F #2B5A7D #3A7BAA

Accessibility & contrast

On white

12.04

#1B394F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1B394F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B394F

12.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B394F	#FFFFFF	#000000	##FFFFFF
##1B394F	1.00	12.04	1.74	12.04
#FFFFFF	12.04	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3950

Deuteranopia (green-blind)

#28344F

Tritanopia (blue-blind)

#003E41

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b394f;
/* rgb */ color: rgb(27, 57, 79);
/* oklch */ color: oklch(33.2% 0.053 242.5);

Tailwind

colors: {
  custom: {
    50: '#5d6f80',
    500: '#1b394f',
    950: '#000000',
  },
}

SCSS

$custom: #1b394f;
$custom-light: #5d6f80;
$custom-dark: #000000;

JSON

{
  "hex": "#1b394f",
  "rgb": {
    "r": 27,
    "g": 57,
    "b": 79
  },
  "hsl": {
    "h": 205.385,
    "s": 49.057,
    "l": 20.784
  },
  "oklch": {
    "l": 0.33227,
    "c": 0.05309,
    "h": 242.5
  },
  "luminance": 0.03724
}

Semantic roles & 50–950 ramp

primary

#1B394F

secondary

#855E41

accent

#894FD9

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #1B394F

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

Preview Lab → · Contrast checker → · Palette generator →