#10304A#10304A

#10304A is a dark, moderate cyan. Relative luminance 0.027; OKLCH L 30.0% C 0.060 H 246.3°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#10304A
RGB	rgb(16, 48, 74)
HSL	hsl(207, 64%, 18%)
HSV	hsv(207, 78%, 29%)
CMYK	cmyk(78.4%, 35.1%, 0%, 71%)
CIE-LAB	lab(18.88, -1.52, -19.49)
CIE-LCH	lch(18.88, 19.54, 265.55°)
OKLab	oklab(29.96% -0.0242 -0.0552)
OKLCH	oklch(29.96% 0.06 246.3)
XYZ	xyz(2.5062, 2.7182, 6.8698)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10304A #4A2A10

analogous

#104A47 #10304A #10134A

triadic

#10304A #4A1030 #304A10

tetradic

#10304A #47104A #4A2A10 #134A10

square

#10304A #47104A #4A2A10 #134A10

split-complementary

#10304A #4A1013 #4A4710

monochromatic

#051019 #051019 #10304A #1B517C #2671AF

Accessibility & contrast

On white

13.60

#10304A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#10304A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10304A

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10304A	#FFFFFF	#000000	##FFFFFF
##10304A	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24314B

Deuteranopia (green-blind)

#1C2B4A

Tritanopia (blue-blind)

#003639

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #10304a;
/* rgb */ color: rgb(16, 48, 74);
/* oklch */ color: oklch(30.0% 0.060 246.3);

Tailwind

colors: {
  custom: {
    50: '#57687c',
    500: '#10304a',
    950: '#000000',
  },
}

SCSS

$custom: #10304a;
$custom-light: #57687c;
$custom-dark: #000000;

JSON

{
  "hex": "#10304a",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 74
  },
  "hsl": {
    "h": 206.897,
    "s": 64.444,
    "l": 17.647
  },
  "oklch": {
    "l": 0.29963,
    "c": 0.06028,
    "h": 246.3
  },
  "luminance": 0.02718
}

Semantic roles & 50–950 ramp

primary

#10304A

secondary

#845732

accent

#8B40E7

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#030609

muted

#787A7B

Preview Lab

Preview with #10304A

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

Preview Lab → · Contrast checker → · Palette generator →