#153F5A#153F5A

#153F5A is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.2% C 0.066 H 240.7°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#153F5A
RGB	rgb(21, 63, 90)
HSL	hsl(203, 62%, 22%)
HSV	hsv(203, 77%, 35%)
CMYK	cmyk(76.7%, 30%, 0%, 64.7%)
CIE-LAB	lab(25.11, -4.29, -20.31)
CIE-LCH	lch(25.11, 20.76, 258.06°)
OKLab	oklab(35.23% -0.0322 -0.0573)
OKLCH	oklch(35.23% 0.066 240.7)
XYZ	xyz(3.9315, 4.4522, 10.3230)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F5A #5A3015

analogous

#155A53 #153F5A #151D5A

triadic

#153F5A #5A153F #3F5A15

tetradic

#153F5A #53155A #5A3015 #1D5A15

square

#153F5A #53155A #5A3015 #1D5A15

split-complementary

#153F5A #5A151D #5A5315

monochromatic

#061119 #091C28 #153F5A #21628C #2C84BD

Accessibility & contrast

On white

11.11

#153F5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#153F5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F5A

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F5A	#FFFFFF	#000000	##FFFFFF
##153F5A	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333F5B

Deuteranopia (green-blind)

#29395A

Tritanopia (blue-blind)

#004648

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #153f5a;
/* rgb */ color: rgb(21, 63, 90);
/* oklch */ color: oklch(35.2% 0.066 240.7);

Tailwind

colors: {
  custom: {
    50: '#5d7388',
    500: '#153f5a',
    950: '#000000',
  },
}

SCSS

$custom: #153f5a;
$custom-light: #5d7388;
$custom-dark: #000000;

JSON

{
  "hex": "#153f5a",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 90
  },
  "hsl": {
    "h": 203.478,
    "s": 62.162,
    "l": 21.765
  },
  "oklch": {
    "l": 0.35229,
    "c": 0.06578,
    "h": 240.7
  },
  "luminance": 0.04453
}

Semantic roles & 50–950 ramp

primary

#153F5A

secondary

#925C39

accent

#8243E5

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #153F5A

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

Preview Lab → · Contrast checker → · Palette generator →