#0A3B4E#0A3B4E

#0A3B4E is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.1% C 0.059 H 229.4°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#0A3B4E
RGB	rgb(10, 59, 78)
HSL	hsl(197, 77%, 17%)
HSV	hsv(197, 87%, 31%)
CMYK	cmyk(87.2%, 24.4%, 0%, 69.4%)
CIE-LAB	lab(22.80, -8.12, -16.05)
CIE-LCH	lch(22.80, 17.98, 243.18°)
OKLab	oklab(33.1% -0.0387 -0.0451)
OKLCH	oklch(33.1% 0.059 229.4)
XYZ	xyz(3.0637, 3.7421, 7.7671)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A3B4E #4E1D0A

analogous

#0A4E3F #0A3B4E #0A194E

triadic

#0A3B4E #4E0A3B #3B4E0A

tetradic

#0A3B4E #3F0A4E #4E1D0A #194E0A

square

#0A3B4E #3F0A4E #4E1D0A #194E0A

split-complementary

#0A3B4E #4E0A19 #4E3F0A

monochromatic

#03151B #03151B #0A3B4E #116484 #188DBA

Accessibility & contrast

On white

12.01

#0A3B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#0A3B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A3B4E

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A3B4E	#FFFFFF	#000000	##FFFFFF
##0A3B4E	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313A4F

Deuteranopia (green-blind)

#28344E

Tritanopia (blue-blind)

#004041

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #0a3b4e;
/* rgb */ color: rgb(10, 59, 78);
/* oklch */ color: oklch(33.1% 0.059 229.4);

Tailwind

colors: {
  custom: {
    50: '#56707f',
    500: '#0a3b4e',
    950: '#000000',
  },
}

SCSS

$custom: #0a3b4e;
$custom-light: #56707f;
$custom-dark: #000000;

JSON

{
  "hex": "#0a3b4e",
  "rgb": {
    "r": 10,
    "g": 59,
    "b": 78
  },
  "hsl": {
    "h": 196.765,
    "s": 77.273,
    "l": 17.255
  },
  "oklch": {
    "l": 0.33098,
    "c": 0.05945,
    "h": 229.4
  },
  "luminance": 0.03743
}

Semantic roles & 50–950 ramp

primary

#0A3B4E

secondary

#8B4429

accent

#6A34F4

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#03070A

muted

#787A7C

Preview Lab

Preview with #0A3B4E

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

Preview Lab → · Contrast checker → · Palette generator →