#1B3C5D#1B3C5D

#1B3C5D is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.070 H 250.5°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B3C5D
RGB	rgb(27, 60, 93)
HSL	hsl(210, 55%, 24%)
HSV	hsv(210, 71%, 36%)
CMYK	cmyk(71%, 35.5%, 0%, 63.5%)
CIE-LAB	lab(24.50, -0.01, -23.22)
CIE-LCH	lch(24.50, 23.22, 269.97°)
OKLab	oklab(34.86% -0.0233 -0.0657)
OKLCH	oklch(34.86% 0.07 250.5)
XYZ	xyz(4.0429, 4.2546, 10.9620)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3C5D #5D3C1B

analogous

#1B5D5D #1B3C5D #1B1B5D

triadic

#1B3C5D #5D1B3C #3C5D1B

tetradic

#1B3C5D #5D1B5D #5D3C1B #1B5D1B

square

#1B3C5D #5D1B5D #5D3C1B #1B5D1B

split-complementary

#1B3C5D #5D1B1B #5D5D1B

monochromatic

#070F18 #0D1D2E #1B3C5D #295B8C #3779BC

Accessibility & contrast

On white

11.35

#1B3C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1B3C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3C5D

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3C5D	#FFFFFF	#000000	##FFFFFF
##1B3C5D	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3E5E

Deuteranopia (green-blind)

#24375C

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b3c5d;
/* rgb */ color: rgb(27, 60, 93);
/* oklch */ color: oklch(34.9% 0.070 250.5);

Tailwind

colors: {
  custom: {
    50: '#60718b',
    500: '#1b3c5d',
    950: '#000000',
  },
}

SCSS

$custom: #1b3c5d;
$custom-light: #60718b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3c5d",
  "rgb": {
    "r": 27,
    "g": 60,
    "b": 93
  },
  "hsl": {
    "h": 210,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.3486,
    "c": 0.06976,
    "h": 250.5
  },
  "luminance": 0.04255
}

Semantic roles & 50–950 ramp

primary

#1B3C5D

secondary

#936A41

accent

#9449DE

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #1B3C5D

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

Preview Lab → · Contrast checker → · Palette generator →