#153A5B#153A5B

#153A5B is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 34.0% C 0.072 H 248.5°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#153A5B
RGB	rgb(21, 58, 91)
HSL	hsl(208, 63%, 22%)
HSV	hsv(208, 77%, 36%)
CMYK	cmyk(76.9%, 36.3%, 0%, 64.3%)
CIE-LAB	lab(23.47, -0.54, -23.54)
CIE-LCH	lch(23.47, 23.55, 268.69°)
OKLab	oklab(33.95% -0.0263 -0.0668)
OKLCH	oklch(33.95% 0.072 248.5)
XYZ	xyz(3.7099, 3.9405, 10.4606)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A5B #5B3615

analogous

#155B59 #153A5B #15175B

triadic

#153A5B #5B153A #3A5B15

tetradic

#153A5B #59155B #5B3615 #175B15

square

#153A5B #59155B #5B3615 #175B15

split-complementary

#153A5B #5B1517 #5B5915

monochromatic

#061019 #0A1A29 #153A5B #205A8D #2C79BE

Accessibility & contrast

On white

11.74

#153A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#153A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A5B

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A5B	#FFFFFF	#000000	##FFFFFF
##153A5B	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3C5C

Deuteranopia (green-blind)

#21355A

Tritanopia (blue-blind)

#004246

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #153a5b;
/* rgb */ color: rgb(21, 58, 91);
/* oklch */ color: oklch(34.0% 0.072 248.5);

Tailwind

colors: {
  custom: {
    50: '#5d6f89',
    500: '#153a5b',
    950: '#000000',
  },
}

SCSS

$custom: #153a5b;
$custom-light: #5d6f89;
$custom-dark: #000000;

JSON

{
  "hex": "#153a5b",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 91
  },
  "hsl": {
    "h": 208.286,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.33953,
    "c": 0.07178,
    "h": 248.5
  },
  "luminance": 0.03941
}

Semantic roles & 50–950 ramp

primary

#153A5B

secondary

#926339

accent

#8F42E6

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #153A5B

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

Preview Lab → · Contrast checker → · Palette generator →