#153C5B#153C5B

#153C5B is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.5% C 0.070 H 245.9°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#153C5B
RGB	rgb(21, 60, 91)
HSL	hsl(207, 63%, 22%)
HSV	hsv(207, 77%, 36%)
CMYK	cmyk(76.9%, 34.1%, 0%, 64.3%)
CIE-LAB	lab(24.15, -1.90, -22.48)
CIE-LCH	lch(24.15, 22.56, 265.18°)
OKLab	oklab(34.48% -0.0285 -0.0637)
OKLCH	oklch(34.48% 0.07 245.9)
XYZ	xyz(3.8127, 4.1461, 10.4948)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153C5B #5B3415

analogous

#155B57 #153C5B #15195B

triadic

#153C5B #5B153C #3C5B15

tetradic

#153C5B #57155B #5B3415 #195B15

square

#153C5B #57155B #5B3415 #195B15

split-complementary

#153C5B #5B1519 #5B5715

monochromatic

#061019 #0A1B29 #153C5B #205D8D #2C7EBE

Accessibility & contrast

On white

11.48

#153C5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#153C5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153C5B

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153C5B	#FFFFFF	#000000	##FFFFFF
##153C5B	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5C

Deuteranopia (green-blind)

#24365A

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #153c5b;
/* rgb */ color: rgb(21, 60, 91);
/* oklch */ color: oklch(34.5% 0.070 245.9);

Tailwind

colors: {
  custom: {
    50: '#5d7189',
    500: '#153c5b',
    950: '#000000',
  },
}

SCSS

$custom: #153c5b;
$custom-light: #5d7189;
$custom-dark: #000000;

JSON

{
  "hex": "#153c5b",
  "rgb": {
    "r": 21,
    "g": 60,
    "b": 91
  },
  "hsl": {
    "h": 206.571,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.34484,
    "c": 0.06976,
    "h": 245.9
  },
  "luminance": 0.04146
}

Semantic roles & 50–950 ramp

primary

#153C5B

secondary

#926139

accent

#8B42E6

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #153C5B

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

Preview Lab → · Contrast checker → · Palette generator →