#042B3A#042B3A

#042B3A is a dark, muted cyan. Relative luminance 0.021; OKLCH L 27.1% C 0.050 H 229.0°. Best body text is #FFFFFF at 14.87:1 contrast (WCAG AA passes).

Color values

HEX	#042B3A
RGB	rgb(4, 43, 58)
HSL	hsl(197, 87%, 12%)
HSV	hsv(197, 93%, 23%)
CMYK	cmyk(93.1%, 25.9%, 0%, 77.3%)
CIE-LAB	lab(15.79, -6.86, -13.35)
CIE-LCH	lch(15.79, 15.01, 242.80°)
OKLab	oklab(27.11% -0.0327 -0.0376)
OKLCH	oklch(27.11% 0.05 229)
XYZ	xyz(1.6774, 2.0588, 4.3112)
Luminance	0.0206 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042B3A #3A1304

analogous

#043A2E #042B3A #04103A

triadic

#042B3A #3A042B #2B3A04

tetradic

#042B3A #2E043A #3A1304 #103A04

square

#042B3A #2E043A #3A1304 #103A04

split-complementary

#042B3A #3A0410 #3A2E04

monochromatic

#02151D #02151D #042B3A #085573 #0C80AD

Accessibility & contrast

On white

14.87

#042B3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#042B3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042B3A

14.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042B3A	#FFFFFF	#000000	##FFFFFF
##042B3A	1.00	14.87	1.41	14.87
#FFFFFF	14.87	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#232A3B

Deuteranopia (green-blind)

#1C253A

Tritanopia (blue-blind)

#002F30

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #042b3a;
/* rgb */ color: rgb(4, 43, 58);
/* oklch */ color: oklch(27.1% 0.050 229.0);

Tailwind

colors: {
  custom: {
    50: '#4f6470',
    500: '#042b3a',
    950: '#000000',
  },
}

SCSS

$custom: #042b3a;
$custom-light: #4f6470;
$custom-dark: #000000;

JSON

{
  "hex": "#042b3a",
  "rgb": {
    "r": 4,
    "g": 43,
    "b": 58
  },
  "hsl": {
    "h": 196.667,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.27111,
    "c": 0.04981,
    "h": 229
  },
  "luminance": 0.02059
}

Semantic roles & 50–950 ramp

primary

#042B3A

secondary

#7C381E

accent

#652BFD

background

#F4F5F6

surface

#E7EAEC

border

#C3C6C7

text

#020507

muted

#78797A

Preview Lab

Preview with #042B3A

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

Preview Lab → · Contrast checker → · Palette generator →