#1B3E52#1B3E52

#1B3E52 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.8% C 0.053 H 236.2°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E52
RGB	rgb(27, 62, 82)
HSL	hsl(202, 50%, 21%)
HSV	hsv(202, 67%, 32%)
CMYK	cmyk(67.1%, 24.4%, 0%, 67.8%)
CIE-LAB	lab(24.60, -5.58, -15.86)
CIE-LCH	lch(24.60, 16.81, 250.60°)
OKLab	oklab(34.75% -0.0297 -0.0444)
OKLCH	oklch(34.75% 0.053 236.2)
XYZ	xyz(3.6970, 4.2871, 8.6137)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E52 #522F1B

analogous

#1B524B #1B3E52 #1B2352

triadic

#1B3E52 #521B3E #3E521B

tetradic

#1B3E52 #4B1B52 #522F1B #23521B

square

#1B3E52 #4B1B52 #522F1B #23521B

split-complementary

#1B3E52 #521B23 #524B1B

monochromatic

#081117 #0C1B24 #1B3E52 #2A6180 #3984AE

Accessibility & contrast

On white

11.31

#1B3E52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1B3E52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E52

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E52	#FFFFFF	#000000	##FFFFFF
##1B3E52	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353E53

Deuteranopia (green-blind)

#2D3852

Tritanopia (blue-blind)

#004345

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b3e52;
/* rgb */ color: rgb(27, 62, 82);
/* oklch */ color: oklch(34.8% 0.053 236.2);

Tailwind

colors: {
  custom: {
    50: '#5e7382',
    500: '#1b3e52',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e52;
$custom-light: #5e7382;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e52",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 82
  },
  "hsl": {
    "h": 201.818,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.34753,
    "c": 0.05346,
    "h": 236.2
  },
  "luminance": 0.04287
}

Semantic roles & 50–950 ramp

primary

#1B3E52

secondary

#885B41

accent

#814EDA

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#05080A

muted

#797B7C

Preview Lab

Preview with #1B3E52

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

Preview Lab → · Contrast checker → · Palette generator →