#1D405B#1D405B

#1D405B is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 35.9% C 0.062 H 244.1°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#1D405B
RGB	rgb(29, 64, 91)
HSL	hsl(206, 52%, 24%)
HSV	hsv(206, 68%, 36%)
CMYK	cmyk(68.1%, 29.7%, 0%, 64.3%)
CIE-LAB	lab(25.81, -3.07, -19.85)
CIE-LCH	lch(25.81, 20.08, 261.22°)
OKLab	oklab(35.89% -0.0271 -0.0559)
OKLCH	oklch(35.89% 0.062 244.1)
XYZ	xyz(4.2277, 4.6829, 10.5766)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D405B #5B381D

analogous

#1D5B57 #1D405B #1D215B

triadic

#1D405B #5B1D40 #405B1D

tetradic

#1D405B #571D5B #5B381D #215B1D

square

#1D405B #571D5B #5B381D #215B1D

split-complementary

#1D405B #5B1D21 #5B571D

monochromatic

#071017 #0E1F2D #1D405B #2C6189 #3B81B8

Accessibility & contrast

On white

10.84

#1D405B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1D405B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D405B

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D405B	#FFFFFF	#000000	##FFFFFF
##1D405B	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34415C

Deuteranopia (green-blind)

#2C3A5A

Tritanopia (blue-blind)

#004749

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d405b;
/* rgb */ color: rgb(29, 64, 91);
/* oklch */ color: oklch(35.9% 0.062 244.1);

Tailwind

colors: {
  custom: {
    50: '#607489',
    500: '#1d405b',
    950: '#000000',
  },
}

SCSS

$custom: #1d405b;
$custom-light: #607489;
$custom-dark: #000000;

JSON

{
  "hex": "#1d405b",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 91
  },
  "hsl": {
    "h": 206.129,
    "s": 51.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35885,
    "c": 0.06212,
    "h": 244.1
  },
  "luminance": 0.04683
}

Semantic roles & 50–950 ramp

primary

#1D405B

secondary

#906544

accent

#8B4DDB

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #1D405B

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

Preview Lab → · Contrast checker → · Palette generator →