#153C66#153C66

#153C66 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.2% C 0.085 H 252.9°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#153C66
RGB	rgb(21, 60, 102)
HSL	hsl(211, 66%, 24%)
HSV	hsv(211, 79%, 40%)
CMYK	cmyk(79.4%, 41.2%, 0%, 60%)
CIE-LAB	lab(24.80, 2.63, -28.60)
CIE-LCH	lch(24.80, 28.72, 275.25°)
OKLab	oklab(35.2% -0.0251 -0.0816)
OKLCH	oklch(35.2% 0.085 252.9)
XYZ	xyz(4.3225, 4.3500, 13.1796)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153C66 #663F15

analogous

#156566 #153C66 #161566

triadic

#153C66 #66153C #3C6615

tetradic

#153C66 #661565 #663F15 #156616

square

#153C66 #661565 #663F15 #156616

split-complementary

#153C66 #661615 #656615

monochromatic

#050F19 #0B1E33 #153C66 #1F5A99 #2A78CC

Accessibility & contrast

On white

11.23

#153C66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#153C66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153C66

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153C66	#FFFFFF	#000000	##FFFFFF
##153C66	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283F68

Deuteranopia (green-blind)

#1C3765

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #153c66;
/* rgb */ color: rgb(21, 60, 102);
/* oklch */ color: oklch(35.2% 0.085 252.9);

Tailwind

colors: {
  custom: {
    50: '#5f7192',
    500: '#153c66',
    950: '#000000',
  },
}

SCSS

$custom: #153c66;
$custom-light: #5f7192;
$custom-dark: #000000;

JSON

{
  "hex": "#153c66",
  "rgb": {
    "r": 21,
    "g": 60,
    "b": 102
  },
  "hsl": {
    "h": 211.111,
    "s": 65.854,
    "l": 24.118
  },
  "oklch": {
    "l": 0.35204,
    "c": 0.08535,
    "h": 252.9
  },
  "luminance": 0.0435
}

Semantic roles & 50–950 ramp

primary

#153C66

secondary

#9D6D3A

accent

#973FE9

background

#F5F6F9

surface

#EAECF1

border

#C6C7CB

text

#05070D

muted

#797A7E

Preview Lab

Preview with #153C66

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

Preview Lab → · Contrast checker → · Palette generator →