#1B385B#1B385B

#1B385B is a dark, moderate cyan. Relative luminance 0.038; OKLCH L 33.7% C 0.071 H 254.4°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#1B385B
RGB	rgb(27, 56, 91)
HSL	hsl(213, 54%, 23%)
HSV	hsv(213, 70%, 36%)
CMYK	cmyk(70.3%, 38.5%, 0%, 64.3%)
CIE-LAB	lab(23.05, 1.93, -24.19)
CIE-LCH	lch(23.05, 24.27, 274.57°)
OKLab	oklab(33.69% -0.0192 -0.0686)
OKLCH	oklch(33.69% 0.071 254.4)
XYZ	xyz(3.7538, 3.8163, 10.4343)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B385B #5B3E1B

analogous

#1B585B #1B385B #1E1B5B

triadic

#1B385B #5B1B38 #385B1B

tetradic

#1B385B #5B1B58 #5B3E1B #1B5B1E

square

#1B385B #5B1B58 #5B3E1B #1B5B1E

split-complementary

#1B385B #5B1E1B #585B1B

monochromatic

#070F18 #0D1B2C #1B385B #29558A #3772B9

Accessibility & contrast

On white

11.91

#1B385B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1B385B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B385B

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B385B	#FFFFFF	#000000	##FFFFFF
##1B385B	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293A5C

Deuteranopia (green-blind)

#20345A

Tritanopia (blue-blind)

#004045

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b385b;
/* rgb */ color: rgb(27, 56, 91);
/* oklch */ color: oklch(33.7% 0.071 254.4);

Tailwind

colors: {
  custom: {
    50: '#5f6e89',
    500: '#1b385b',
    950: '#000000',
  },
}

SCSS

$custom: #1b385b;
$custom-light: #5f6e89;
$custom-dark: #000000;

JSON

{
  "hex": "#1b385b",
  "rgb": {
    "r": 27,
    "g": 56,
    "b": 91
  },
  "hsl": {
    "h": 212.813,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33694,
    "c": 0.07127,
    "h": 254.4
  },
  "luminance": 0.03817
}

Semantic roles & 50–950 ramp

primary

#1B385B

secondary

#916D41

accent

#9B4ADE

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1B385B

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

Preview Lab → · Contrast checker → · Palette generator →