#1E3440#1E3440

#1E3440 is a dark, muted cyan. Relative luminance 0.031; OKLCH L 31.2% C 0.035 H 233.4°. Best body text is #FFFFFF at 12.96:1 contrast (WCAG AA passes).

Color values

HEX	#1E3440
RGB	rgb(30, 52, 64)
HSL	hsl(201, 36%, 18%)
HSV	hsv(201, 53%, 25%)
CMYK	cmyk(53.1%, 18.8%, 0%, 74.9%)
CIE-LAB	lab(20.45, -4.76, -10.21)
CIE-LCH	lch(20.45, 11.27, 245.02°)
OKLab	oklab(31.22% -0.021 -0.0283)
OKLCH	oklch(31.22% 0.035 233.4)
XYZ	xyz(2.6885, 3.1020, 5.3066)
Luminance	0.0310 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3440 #402A1E

analogous

#1E403B #1E3440 #1E2340

triadic

#1E3440 #401E34 #34401E

tetradic

#1E3440 #3B1E40 #402A1E #23401E

square

#1E3440 #3B1E40 #402A1E #23401E

split-complementary

#1E3440 #401E23 #403B1E

monochromatic

#0A1115 #0A1216 #1E3440 #32566A #457893

Accessibility & contrast

On white

12.96

#1E3440 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1E3440 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3440

12.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3440	#FFFFFF	#000000	##FFFFFF
##1E3440	1.00	12.96	1.62	12.96
#FFFFFF	12.96	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3341

Deuteranopia (green-blind)

#293040

Tritanopia (blue-blind)

#0E3738

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1e3440;
/* rgb */ color: rgb(30, 52, 64);
/* oklch */ color: oklch(31.2% 0.035 233.4);

Tailwind

colors: {
  custom: {
    50: '#5c6b74',
    500: '#1e3440',
    950: '#000000',
  },
}

SCSS

$custom: #1e3440;
$custom-light: #5c6b74;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3440",
  "rgb": {
    "r": 30,
    "g": 52,
    "b": 64
  },
  "hsl": {
    "h": 201.176,
    "s": 36.17,
    "l": 18.431
  },
  "oklch": {
    "l": 0.31223,
    "c": 0.03526,
    "h": 233.4
  },
  "luminance": 0.03102
}

Semantic roles & 50–950 ramp

primary

#1E3440

secondary

#745645

accent

#835CCC

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040608

muted

#797A7B

Preview Lab

Preview with #1E3440

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

Preview Lab → · Contrast checker → · Palette generator →