#1B385A#1B385A

#1B385A is a dark, moderate cyan. Relative luminance 0.038; OKLCH L 33.6% C 0.070 H 253.8°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B385A
RGB	rgb(27, 56, 90)
HSL	hsl(212, 54%, 23%)
HSV	hsv(212, 70%, 35%)
CMYK	cmyk(70%, 37.8%, 0%, 64.7%)
CIE-LAB	lab(23.00, 1.54, -23.62)
CIE-LCH	lch(23.00, 23.67, 273.72°)
OKLab	oklab(33.63% -0.0195 -0.067)
OKLCH	oklch(33.63% 0.07 253.8)
XYZ	xyz(3.7110, 3.7992, 10.2086)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B385A #5A3D1B

analogous

#1B575A #1B385A #1D1B5A

triadic

#1B385A #5A1B38 #385A1B

tetradic

#1B385A #5A1B57 #5A3D1B #1B5A1D

square

#1B385A #5A1B57 #5A3D1B #1B5A1D

split-complementary

#1B385A #5A1D1B #575A1B

monochromatic

#070F18 #0D1B2B #1B385A #295589 #3773B8

Accessibility & contrast

On white

11.93

#1B385A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1B385A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B385A

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B385A	#FFFFFF	#000000	##FFFFFF
##1B385A	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293A5B

Deuteranopia (green-blind)

#203459

Tritanopia (blue-blind)

#004044

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b385a;
/* rgb */ color: rgb(27, 56, 90);
/* oklch */ color: oklch(33.6% 0.070 253.8);

Tailwind

colors: {
  custom: {
    50: '#5f6e89',
    500: '#1b385a',
    950: '#000000',
  },
}

SCSS

$custom: #1b385a;
$custom-light: #5f6e89;
$custom-dark: #000000;

JSON

{
  "hex": "#1b385a",
  "rgb": {
    "r": 27,
    "g": 56,
    "b": 90
  },
  "hsl": {
    "h": 212.381,
    "s": 53.846,
    "l": 22.941
  },
  "oklch": {
    "l": 0.33629,
    "c": 0.06977,
    "h": 253.8
  },
  "luminance": 0.038
}

Semantic roles & 50–950 ramp

primary

#1B385A

secondary

#906C41

accent

#9A4BDD

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1B385A

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

Preview Lab → · Contrast checker → · Palette generator →