#1D404B#1D404B

#1D404B is a dark, muted cyan. Relative luminance 0.044; OKLCH L 35.0% C 0.045 H 220.9°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#1D404B
RGB	rgb(29, 64, 75)
HSL	hsl(194, 44%, 20%)
HSV	hsv(194, 61%, 29%)
CMYK	cmyk(61.3%, 14.7%, 0%, 70.6%)
CIE-LAB	lab(25.06, -8.93, -10.53)
CIE-LCH	lch(25.06, 13.81, 229.70°)
OKLab	oklab(35.04% -0.0337 -0.0292)
OKLCH	oklch(35.04% 0.045 220.9)
XYZ	xyz(3.6096, 4.4357, 7.3212)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D404B #4B281D

analogous

#1D4B3F #1D404B #1D294B

triadic

#1D404B #4B1D40 #404B1D

tetradic

#1D404B #3F1D4B #4B281D #294B1D

square

#1D404B #3F1D4B #4B281D #294B1D

split-complementary

#1D404B #4B1D29 #4B3F1D

monochromatic

#091316 #0C1A1F #1D404B #2E6677 #3F8BA3

Accessibility & contrast

On white

11.13

#1D404B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1D404B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D404B

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D404B	#FFFFFF	#000000	##FFFFFF
##1D404B	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393E4C

Deuteranopia (green-blind)

#33394B

Tritanopia (blue-blind)

#004443

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d404b;
/* rgb */ color: rgb(29, 64, 75);
/* oklch */ color: oklch(35.0% 0.045 220.9);

Tailwind

colors: {
  custom: {
    50: '#5e747d',
    500: '#1d404b',
    950: '#000000',
  },
}

SCSS

$custom: #1d404b;
$custom-light: #5e747d;
$custom-dark: #000000;

JSON

{
  "hex": "#1d404b",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 75
  },
  "hsl": {
    "h": 194.348,
    "s": 44.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.35042,
    "c": 0.04462,
    "h": 220.9
  },
  "luminance": 0.04436
}

Semantic roles & 50–950 ramp

primary

#1D404B

secondary

#805244

accent

#7254D4

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #1D404B

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

Preview Lab → · Contrast checker → · Palette generator →