#0A313B#0A313B

#0A313B is a dark, muted cyan. Relative luminance 0.026; OKLCH L 29.2% C 0.046 H 218.7°. Best body text is #FFFFFF at 13.86:1 contrast (WCAG AA passes).

Color values

HEX	#0A313B
RGB	rgb(10, 49, 59)
HSL	hsl(192, 71%, 14%)
HSV	hsv(192, 83%, 23%)
CMYK	cmyk(83.1%, 16.9%, 0%, 76.9%)
CIE-LAB	lab(18.26, -9.35, -10.22)
CIE-LCH	lch(18.26, 13.85, 227.53°)
OKLab	oklab(29.16% -0.0356 -0.0285)
OKLCH	oklch(29.16% 0.046 218.7)
XYZ	xyz(2.0126, 2.5767, 4.5281)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A313B #3B140A

analogous

#0A3B2C #0A313B #0A183B

triadic

#0A313B #3B0A31 #313B0A

tetradic

#0A313B #2C0A3B #3B140A #183B0A

square

#0A313B #2C0A3B #3B140A #183B0A

split-complementary

#0A313B #3B0A18 #3B2C0A

monochromatic

#04161A #04161A #0A313B #135C6F #1C88A4

Accessibility & contrast

On white

13.86

#0A313B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#0A313B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A313B

13.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A313B	#FFFFFF	#000000	##FFFFFF
##0A313B	1.00	13.86	1.52	13.86
#FFFFFF	13.86	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2F3C

Deuteranopia (green-blind)

#242A3B

Tritanopia (blue-blind)

#003434

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #0a313b;
/* rgb */ color: rgb(10, 49, 59);
/* oklch */ color: oklch(29.2% 0.046 218.7);

Tailwind

colors: {
  custom: {
    50: '#526971',
    500: '#0a313b',
    950: '#000000',
  },
}

SCSS

$custom: #0a313b;
$custom-light: #526971;
$custom-dark: #000000;

JSON

{
  "hex": "#0a313b",
  "rgb": {
    "r": 10,
    "g": 49,
    "b": 59
  },
  "hsl": {
    "h": 192.245,
    "s": 71.014,
    "l": 13.529
  },
  "oklch": {
    "l": 0.2916,
    "c": 0.04564,
    "h": 218.7
  },
  "luminance": 0.02577
}

Semantic roles & 50–950 ramp

primary

#0A313B

secondary

#783928

accent

#5F3AEE

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020607

muted

#787A7A

Preview Lab

Preview with #0A313B

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

Preview Lab → · Contrast checker → · Palette generator →