#153B5C#153B5C

#153B5C is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.072 H 248.0°. Best body text is #FFFFFF at 11.59:1 contrast (WCAG AA passes).

Color values

HEX	#153B5C
RGB	rgb(21, 59, 92)
HSL	hsl(208, 63%, 22%)
HSV	hsv(208, 77%, 36%)
CMYK	cmyk(77.2%, 35.9%, 0%, 63.9%)
CIE-LAB	lab(23.87, -0.81, -23.57)
CIE-LCH	lch(23.87, 23.59, 268.04°)
OKLab	oklab(34.28% -0.0271 -0.0669)
OKLCH	oklch(34.28% 0.072 248)
XYZ	xyz(3.8043, 4.0596, 10.7062)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B5C #5C3615

analogous

#155C5A #153B5C #15185C

triadic

#153B5C #5C153B #3B5C15

tetradic

#153B5C #5A155C #5C3615 #185C15

square

#153B5C #5A155C #5C3615 #185C15

split-complementary

#153B5C #5C1518 #5C5A15

monochromatic

#061019 #0A1B2A #153B5C #205B8E #2C7BC0

Accessibility & contrast

On white

11.59

#153B5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#153B5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B5C

11.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B5C	#FFFFFF	#000000	##FFFFFF
##153B5C	1.00	11.59	1.81	11.59
#FFFFFF	11.59	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3C5D

Deuteranopia (green-blind)

#22365B

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #153b5c;
/* rgb */ color: rgb(21, 59, 92);
/* oklch */ color: oklch(34.3% 0.072 248.0);

Tailwind

colors: {
  custom: {
    50: '#5d708a',
    500: '#153b5c',
    950: '#000000',
  },
}

SCSS

$custom: #153b5c;
$custom-light: #5d708a;
$custom-dark: #000000;

JSON

{
  "hex": "#153b5c",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 92
  },
  "hsl": {
    "h": 207.887,
    "s": 62.832,
    "l": 22.157
  },
  "oklch": {
    "l": 0.34281,
    "c": 0.07215,
    "h": 248
  },
  "luminance": 0.0406
}

Semantic roles & 50–950 ramp

primary

#153B5C

secondary

#936339

accent

#8E42E6

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #153B5C

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

Preview Lab → · Contrast checker → · Palette generator →