#042E3F#042E3F

#042E3F is a dark, muted cyan. Relative luminance 0.023; OKLCH L 28.3% C 0.053 H 230.7°. Best body text is #FFFFFF at 14.31:1 contrast (WCAG AA passes).

Color values

HEX	#042E3F
RGB	rgb(4, 46, 63)
HSL	hsl(197, 88%, 13%)
HSV	hsv(197, 94%, 25%)
CMYK	cmyk(93.7%, 27%, 0%, 75.3%)
CIE-LAB	lab(17.17, -6.72, -14.67)
CIE-LCH	lch(17.17, 16.14, 245.41°)
OKLab	oklab(28.3% -0.0338 -0.0414)
OKLCH	oklch(28.3% 0.053 230.7)
XYZ	xyz(1.9239, 2.3384, 5.0516)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042E3F #3F1504

analogous

#043F32 #042E3F #04103F

triadic

#042E3F #3F042E #2E3F04

tetradic

#042E3F #32043F #3F1504 #103F04

square

#042E3F #32043F #3F1504 #103F04

split-complementary

#042E3F #3F0410 #3F3204

monochromatic

#02151D #02151D #042E3F #085879 #0B82B2

Accessibility & contrast

On white

14.31

#042E3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#042E3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042E3F

14.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042E3F	#FFFFFF	#000000	##FFFFFF
##042E3F	1.00	14.31	1.47	14.31
#FFFFFF	14.31	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#252D40

Deuteranopia (green-blind)

#1D283F

Tritanopia (blue-blind)

#003334

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #042e3f;
/* rgb */ color: rgb(4, 46, 63);
/* oklch */ color: oklch(28.3% 0.053 230.7);

Tailwind

colors: {
  custom: {
    50: '#506674',
    500: '#042e3f',
    950: '#000000',
  },
}

SCSS

$custom: #042e3f;
$custom-light: #506674;
$custom-dark: #000000;

JSON

{
  "hex": "#042e3f",
  "rgb": {
    "r": 4,
    "g": 46,
    "b": 63
  },
  "hsl": {
    "h": 197.288,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.28301,
    "c": 0.05345,
    "h": 230.7
  },
  "luminance": 0.02339
}

Semantic roles & 50–950 ramp

primary

#042E3F

secondary

#803B1E

accent

#672AFE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#020608

muted

#787A7B

Preview Lab

Preview with #042E3F

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

Preview Lab → · Contrast checker → · Palette generator →