#1B3D52#1B3D52

#1B3D52 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.054 H 238.2°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B3D52
RGB	rgb(27, 61, 82)
HSL	hsl(203, 50%, 21%)
HSV	hsv(203, 67%, 32%)
CMYK	cmyk(67.1%, 25.6%, 0%, 67.8%)
CIE-LAB	lab(24.26, -4.93, -16.39)
CIE-LCH	lch(24.26, 17.12, 253.26°)
OKLab	oklab(34.48% -0.0285 -0.0459)
OKLCH	oklch(34.48% 0.054 238.2)
XYZ	xyz(3.6432, 4.1793, 8.5957)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3D52 #52301B

analogous

#1B524C #1B3D52 #1B2252

triadic

#1B3D52 #521B3D #3D521B

tetradic

#1B3D52 #4C1B52 #52301B #22521B

square

#1B3D52 #4C1B52 #52301B #22521B

split-complementary

#1B3D52 #521B22 #524C1B

monochromatic

#081117 #0C1B24 #1B3D52 #2A5F80 #3982AE

Accessibility & contrast

On white

11.44

#1B3D52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B3D52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3D52

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3D52	#FFFFFF	#000000	##FFFFFF
##1B3D52	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333D53

Deuteranopia (green-blind)

#2C3752

Tritanopia (blue-blind)

#004244

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b3d52;
/* rgb */ color: rgb(27, 61, 82);
/* oklch */ color: oklch(34.5% 0.054 238.2);

Tailwind

colors: {
  custom: {
    50: '#5e7282',
    500: '#1b3d52',
    950: '#000000',
  },
}

SCSS

$custom: #1b3d52;
$custom-light: #5e7282;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3d52",
  "rgb": {
    "r": 27,
    "g": 61,
    "b": 82
  },
  "hsl": {
    "h": 202.909,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.3448,
    "c": 0.05406,
    "h": 238.2
  },
  "luminance": 0.0418
}

Semantic roles & 50–950 ramp

primary

#1B3D52

secondary

#885C41

accent

#834EDA

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#05080A

muted

#797B7C

Preview Lab

Preview with #1B3D52

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

Preview Lab → · Contrast checker → · Palette generator →