#1B4D5D#1B4D5D

#1B4D5D is a dark, muted cyan. Relative luminance 0.063; OKLCH L 39.4% C 0.059 H 222.6°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D5D
RGB	rgb(27, 77, 93)
HSL	hsl(195, 55%, 24%)
HSV	hsv(195, 71%, 36%)
CMYK	cmyk(71%, 17.2%, 0%, 63.5%)
CIE-LAB	lab(30.23, -10.92, -14.30)
CIE-LCH	lch(30.23, 17.99, 232.63°)
OKLab	oklab(39.41% -0.0434 -0.0399)
OKLCH	oklch(39.41% 0.059 222.6)
XYZ	xyz(5.0809, 6.3305, 11.3079)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D5D #5D2B1B

analogous

#1B5D4C #1B4D5D #1B2C5D

triadic

#1B4D5D #5D1B4D #4D5D1B

tetradic

#1B4D5D #4C1B5D #5D2B1B #2C5D1B

square

#1B4D5D #4C1B5D #5D2B1B #2C5D1B

split-complementary

#1B4D5D #5D1B2C #5D4C1B

monochromatic

#071418 #0D262E #1B4D5D #29748C #379CBC

Accessibility & contrast

On white

9.27

#1B4D5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#1B4D5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D5D

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D5D	#FFFFFF	#000000	##FFFFFF
##1B4D5D	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444B5E

Deuteranopia (green-blind)

#3A445D

Tritanopia (blue-blind)

#005252

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4d5d;
/* rgb */ color: rgb(27, 77, 93);
/* oklch */ color: oklch(39.4% 0.059 222.6);

Tailwind

colors: {
  custom: {
    50: '#607e8b',
    500: '#1b4d5d',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d5d;
$custom-light: #607e8b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d5d",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 93
  },
  "hsl": {
    "h": 194.545,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.39411,
    "c": 0.05897,
    "h": 222.6
  },
  "luminance": 0.06331
}

Semantic roles & 50–950 ramp

primary

#1B4D5D

secondary

#935541

accent

#6E49DE

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0C

muted

#7A7C7D

Preview Lab

Preview with #1B4D5D

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

Preview Lab → · Contrast checker → · Palette generator →