#1B3045#1B3045

#1B3045 is a dark, muted cyan. Relative luminance 0.028; OKLCH L 30.2% C 0.047 H 249.6°. Best body text is #FFFFFF at 13.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B3045
RGB	rgb(27, 48, 69)
HSL	hsl(210, 44%, 19%)
HSV	hsv(210, 61%, 27%)
CMYK	cmyk(60.9%, 30.4%, 0%, 72.9%)
CIE-LAB	lab(19.13, -1.08, -15.67)
CIE-LCH	lch(19.13, 15.71, 266.05°)
OKLab	oklab(30.21% -0.0163 -0.044)
OKLCH	oklch(30.21% 0.047 249.6)
XYZ	xyz(2.5827, 2.7764, 6.0289)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3045 #45301B

analogous

#1B4545 #1B3045 #1B1B45

triadic

#1B3045 #451B30 #30451B

tetradic

#1B3045 #451B45 #45301B #1B451B

square

#1B3045 #451B45 #45301B #1B451B

split-complementary

#1B3045 #451B1B #45451B

monochromatic

#090F16 #0A1119 #1B3045 #2C4F71 #3D6D9D

Accessibility & contrast

On white

13.50

#1B3045 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B3045 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3045

13.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3045	#FFFFFF	#000000	##FFFFFF
##1B3045	1.00	13.50	1.56	13.50
#FFFFFF	13.50	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273146

Deuteranopia (green-blind)

#222D45

Tritanopia (blue-blind)

#033537

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b3045;
/* rgb */ color: rgb(27, 48, 69);
/* oklch */ color: oklch(30.2% 0.047 249.6);

Tailwind

colors: {
  custom: {
    50: '#5b6878',
    500: '#1b3045',
    950: '#000000',
  },
}

SCSS

$custom: #1b3045;
$custom-light: #5b6878;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3045",
  "rgb": {
    "r": 27,
    "g": 48,
    "b": 69
  },
  "hsl": {
    "h": 210,
    "s": 43.75,
    "l": 18.824
  },
  "oklch": {
    "l": 0.30211,
    "c": 0.04689,
    "h": 249.6
  },
  "luminance": 0.02777
}

Semantic roles & 50–950 ramp

primary

#1B3045

secondary

#7B5E41

accent

#9454D3

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040609

muted

#797A7B

Preview Lab

Preview with #1B3045

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

Preview Lab → · Contrast checker → · Palette generator →