#042A3A#042A3A

#042A3A is a dark, muted cyan. Relative luminance 0.020; OKLCH L 26.8% C 0.050 H 231.2°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#042A3A
RGB	rgb(4, 42, 58)
HSL	hsl(198, 87%, 12%)
HSV	hsv(198, 93%, 23%)
CMYK	cmyk(93.1%, 27.6%, 0%, 77.3%)
CIE-LAB	lab(15.42, -6.19, -13.93)
CIE-LCH	lch(15.42, 15.25, 246.06°)
OKLab	oklab(26.81% -0.0315 -0.0393)
OKLCH	oklch(26.81% 0.05 231.2)
XYZ	xyz(1.6414, 1.9870, 4.2992)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042A3A #3A1404

analogous

#043A2F #042A3A #040F3A

triadic

#042A3A #3A042A #2A3A04

tetradic

#042A3A #2F043A #3A1404 #0F3A04

square

#042A3A #2F043A #3A1404 #0F3A04

split-complementary

#042A3A #3A040F #3A2F04

monochromatic

#02151D #02151D #042A3A #085373 #0C7DAD

Accessibility & contrast

On white

15.03

#042A3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#042A3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042A3A

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042A3A	#FFFFFF	#000000	##FFFFFF
##042A3A	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22293B

Deuteranopia (green-blind)

#1B243A

Tritanopia (blue-blind)

#002E2F

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #042a3a;
/* rgb */ color: rgb(4, 42, 58);
/* oklch */ color: oklch(26.8% 0.050 231.2);

Tailwind

colors: {
  custom: {
    50: '#4f6370',
    500: '#042a3a',
    950: '#000000',
  },
}

SCSS

$custom: #042a3a;
$custom-light: #4f6370;
$custom-dark: #000000;

JSON

{
  "hex": "#042a3a",
  "rgb": {
    "r": 4,
    "g": 42,
    "b": 58
  },
  "hsl": {
    "h": 197.778,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.26812,
    "c": 0.05038,
    "h": 231.2
  },
  "luminance": 0.01987
}

Semantic roles & 50–950 ramp

primary

#042A3A

secondary

#7C3A1E

accent

#692BFD

background

#F4F5F6

surface

#E7EAEC

border

#C3C6C7

text

#020507

muted

#78797A

Preview Lab

Preview with #042A3A

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

Preview Lab → · Contrast checker → · Palette generator →