#1B3655#1B3655

#1B3655 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.8% C 0.065 H 253.2°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B3655
RGB	rgb(27, 54, 85)
HSL	hsl(212, 52%, 22%)
HSV	hsv(212, 68%, 33%)
CMYK	cmyk(68.2%, 36.5%, 0%, 66.7%)
CIE-LAB	lab(22.04, 0.94, -21.83)
CIE-LCH	lch(22.04, 21.85, 272.47°)
OKLab	oklab(32.79% -0.0186 -0.0618)
OKLCH	oklch(32.79% 0.065 253.2)
XYZ	xyz(3.4103, 3.5269, 9.0936)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3655 #553A1B

analogous

#1B5355 #1B3655 #1D1B55

triadic

#1B3655 #551B36 #36551B

tetradic

#1B3655 #551B53 #553A1B #1B551D

square

#1B3655 #551B53 #553A1B #1B551D

split-complementary

#1B3655 #551D1B #53551B

monochromatic

#070F17 #0C1827 #1B3655 #2A5483 #3971B2

Accessibility & contrast

On white

12.31

#1B3655 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B3655 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3655

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3655	#FFFFFF	#000000	##FFFFFF
##1B3655	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293856

Deuteranopia (green-blind)

#213254

Tritanopia (blue-blind)

#003D41

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b3655;
/* rgb */ color: rgb(27, 54, 85);
/* oklch */ color: oklch(32.8% 0.065 253.2);

Tailwind

colors: {
  custom: {
    50: '#5e6c85',
    500: '#1b3655',
    950: '#000000',
  },
}

SCSS

$custom: #1b3655;
$custom-light: #5e6c85;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3655",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 85
  },
  "hsl": {
    "h": 212.069,
    "s": 51.786,
    "l": 21.961
  },
  "oklch": {
    "l": 0.32787,
    "c": 0.06454,
    "h": 253.2
  },
  "luminance": 0.03527
}

Semantic roles & 50–950 ramp

primary

#1B3655

secondary

#8B6841

accent

#994DDB

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1B3655

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

Preview Lab → · Contrast checker → · Palette generator →