#1D3D5B#1D3D5B

#1D3D5B is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.1% C 0.065 H 248.8°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D5B
RGB	rgb(29, 61, 91)
HSL	hsl(209, 52%, 24%)
HSV	hsv(209, 68%, 36%)
CMYK	cmyk(68.1%, 33%, 0%, 64.3%)
CIE-LAB	lab(24.81, -1.07, -21.42)
CIE-LCH	lch(24.81, 21.45, 267.15°)
OKLab	oklab(35.09% -0.0235 -0.0605)
OKLCH	oklch(35.09% 0.065 248.8)
XYZ	xyz(4.0631, 4.3536, 10.5217)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D5B #5B3B1D

analogous

#1D5B5A #1D3D5B #1D1E5B

triadic

#1D3D5B #5B1D3D #3D5B1D

tetradic

#1D3D5B #5A1D5B #5B3B1D #1E5B1D

square

#1D3D5B #5A1D5B #5B3B1D #1E5B1D

split-complementary

#1D3D5B #5B1D1E #5B5A1D

monochromatic

#071017 #0E1E2D #1D3D5B #2C5C89 #3B7BB8

Accessibility & contrast

On white

11.23

#1D3D5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D3D5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D5B

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D5B	#FFFFFF	#000000	##FFFFFF
##1D3D5B	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303E5C

Deuteranopia (green-blind)

#28385A

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d3d5b;
/* rgb */ color: rgb(29, 61, 91);
/* oklch */ color: oklch(35.1% 0.065 248.8);

Tailwind

colors: {
  custom: {
    50: '#607289',
    500: '#1d3d5b',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d5b;
$custom-light: #607289;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d5b",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 91
  },
  "hsl": {
    "h": 209.032,
    "s": 51.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35093,
    "c": 0.06487,
    "h": 248.8
  },
  "luminance": 0.04354
}

Semantic roles & 50–950 ramp

primary

#1D3D5B

secondary

#906944

accent

#924DDB

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1D3D5B

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

Preview Lab → · Contrast checker → · Palette generator →