#1F405A#1F405A

#1F405A is a dark, muted cyan. Relative luminance 0.047; OKLCH L 35.9% C 0.060 H 244.4°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F405A
RGB	rgb(31, 64, 90)
HSL	hsl(206, 49%, 24%)
HSV	hsv(206, 66%, 35%)
CMYK	cmyk(65.6%, 28.9%, 0%, 64.7%)
CIE-LAB	lab(25.85, -3.02, -19.13)
CIE-LCH	lch(25.85, 19.37, 261.04°)
OKLab	oklab(35.92% -0.0258 -0.0538)
OKLCH	oklch(35.92% 0.06 244.4)
XYZ	xyz(4.2432, 4.6959, 10.3537)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F405A #5A391F

analogous

#1F5A56 #1F405A #1F225A

triadic

#1F405A #5A1F40 #405A1F

tetradic

#1F405A #561F5A #5A391F #225A1F

square

#1F405A #561F5A #5A391F #225A1F

split-complementary

#1F405A #5A1F22 #5A561F

monochromatic

#081017 #0F202C #1F405A #2F6088 #3E81B5

Accessibility & contrast

On white

10.83

#1F405A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1F405A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F405A

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F405A	#FFFFFF	#000000	##FFFFFF
##1F405A	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35405B

Deuteranopia (green-blind)

#2D3B5A

Tritanopia (blue-blind)

#004649

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f405a;
/* rgb */ color: rgb(31, 64, 90);
/* oklch */ color: oklch(35.9% 0.060 244.4);

Tailwind

colors: {
  custom: {
    50: '#617488',
    500: '#1f405a',
    950: '#000000',
  },
}

SCSS

$custom: #1f405a;
$custom-light: #617488;
$custom-dark: #000000;

JSON

{
  "hex": "#1f405a",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 90
  },
  "hsl": {
    "h": 206.441,
    "s": 48.76,
    "l": 23.725
  },
  "oklch": {
    "l": 0.35923,
    "c": 0.05966,
    "h": 244.4
  },
  "luminance": 0.04696
}

Semantic roles & 50–950 ramp

primary

#1F405A

secondary

#8F6646

accent

#8C4FD8

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #1F405A

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

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