#1D3A4E#1D3A4E

#1D3A4E is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.5% C 0.050 H 240.6°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A4E
RGB	rgb(29, 58, 78)
HSL	hsl(204, 46%, 21%)
HSV	hsv(204, 63%, 31%)
CMYK	cmyk(62.8%, 25.6%, 0%, 69.4%)
CIE-LAB	lab(23.13, -3.99, -15.49)
CIE-LCH	lch(23.13, 16.00, 255.56°)
OKLab	oklab(33.55% -0.0245 -0.0434)
OKLCH	oklch(33.55% 0.05 240.6)
XYZ	xyz(3.3944, 3.8371, 7.7680)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A4E #4E311D

analogous

#1D4E49 #1D3A4E #1D214E

triadic

#1D3A4E #4E1D3A #3A4E1D

tetradic

#1D3A4E #491D4E #4E311D #214E1D

square

#1D3A4E #491D4E #4E311D #214E1D

split-complementary

#1D3A4E #4E1D21 #4E491D

monochromatic

#081116 #0C1921 #1D3A4E #2E5B7B #3E7CA7

Accessibility & contrast

On white

11.88

#1D3A4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1D3A4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A4E

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A4E	#FFFFFF	#000000	##FFFFFF
##1D3A4E	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313A4F

Deuteranopia (green-blind)

#2A354E

Tritanopia (blue-blind)

#003F41

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d3a4e;
/* rgb */ color: rgb(29, 58, 78);
/* oklch */ color: oklch(33.5% 0.050 240.6);

Tailwind

colors: {
  custom: {
    50: '#5e707f',
    500: '#1d3a4e',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a4e;
$custom-light: #5e707f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a4e",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 78
  },
  "hsl": {
    "h": 204.49,
    "s": 45.794,
    "l": 20.98
  },
  "oklch": {
    "l": 0.33546,
    "c": 0.04979,
    "h": 240.6
  },
  "luminance": 0.03837
}

Semantic roles & 50–950 ramp

primary

#1D3A4E

secondary

#835E44

accent

#8852D5

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #1D3A4E

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

Preview Lab → · Contrast checker → · Palette generator →