#1B385C#1B385C

#1B385C is a dark, moderate cyan. Relative luminance 0.038; OKLCH L 33.8% C 0.073 H 254.9°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#1B385C
RGB	rgb(27, 56, 92)
HSL	hsl(213, 55%, 23%)
HSV	hsv(213, 71%, 36%)
CMYK	cmyk(70.7%, 39.1%, 0%, 63.9%)
CIE-LAB	lab(23.11, 2.33, -24.75)
CIE-LCH	lch(23.11, 24.86, 275.39°)
OKLab	oklab(33.76% -0.0189 -0.0703)
OKLCH	oklch(33.76% 0.073 254.9)
XYZ	xyz(3.7972, 3.8337, 10.6630)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B385C #5C3F1B

analogous

#1B585C #1B385C #1E1B5C

triadic

#1B385C #5C1B38 #385C1B

tetradic

#1B385C #5C1B58 #5C3F1B #1B5C1E

square

#1B385C #5C1B58 #5C3F1B #1B5C1E

split-complementary

#1B385C #5C1E1B #585C1B

monochromatic

#070E18 #0D1B2D #1B385C #29558B #3772BB

Accessibility & contrast

On white

11.89

#1B385C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1B385C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B385C

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B385C	#FFFFFF	#000000	##FFFFFF
##1B385C	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283A5D

Deuteranopia (green-blind)

#1F345B

Tritanopia (blue-blind)

#004045

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b385c;
/* rgb */ color: rgb(27, 56, 92);
/* oklch */ color: oklch(33.8% 0.073 254.9);

Tailwind

colors: {
  custom: {
    50: '#5f6e8a',
    500: '#1b385c',
    950: '#000000',
  },
}

SCSS

$custom: #1b385c;
$custom-light: #5f6e8a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b385c",
  "rgb": {
    "r": 27,
    "g": 56,
    "b": 92
  },
  "hsl": {
    "h": 213.231,
    "s": 54.622,
    "l": 23.333
  },
  "oklch": {
    "l": 0.33759,
    "c": 0.07278,
    "h": 254.9
  },
  "luminance": 0.03834
}

Semantic roles & 50–950 ramp

primary

#1B385C

secondary

#926E41

accent

#9C4ADE

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #1B385C

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

Preview Lab → · Contrast checker → · Palette generator →