#153B5B#153B5B

#153B5B is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.2% C 0.071 H 247.2°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#153B5B
RGB	rgb(21, 59, 91)
HSL	hsl(207, 63%, 22%)
HSV	hsv(207, 77%, 36%)
CMYK	cmyk(76.9%, 35.2%, 0%, 64.3%)
CIE-LAB	lab(23.81, -1.22, -23.01)
CIE-LCH	lch(23.81, 23.04, 266.97°)
OKLab	oklab(34.22% -0.0274 -0.0652)
OKLCH	oklch(34.22% 0.071 247.2)
XYZ	xyz(3.7608, 4.0423, 10.4775)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B5B #5B3515

analogous

#155B58 #153B5B #15185B

triadic

#153B5B #5B153B #3B5B15

tetradic

#153B5B #58155B #5B3515 #185B15

square

#153B5B #58155B #5B3515 #185B15

split-complementary

#153B5B #5B1518 #5B5815

monochromatic

#061019 #0A1B29 #153B5B #205B8D #2C7BBE

Accessibility & contrast

On white

11.61

#153B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#153B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B5B

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B5B	#FFFFFF	#000000	##FFFFFF
##153B5B	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3C5C

Deuteranopia (green-blind)

#23365A

Tritanopia (blue-blind)

#004346

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #153b5b;
/* rgb */ color: rgb(21, 59, 91);
/* oklch */ color: oklch(34.2% 0.071 247.2);

Tailwind

colors: {
  custom: {
    50: '#5d7089',
    500: '#153b5b',
    950: '#000000',
  },
}

SCSS

$custom: #153b5b;
$custom-light: #5d7089;
$custom-dark: #000000;

JSON

{
  "hex": "#153b5b",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 91
  },
  "hsl": {
    "h": 207.429,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.34218,
    "c": 0.07075,
    "h": 247.2
  },
  "luminance": 0.04043
}

Semantic roles & 50–950 ramp

primary

#153B5B

secondary

#926239

accent

#8D42E6

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #153B5B

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

Preview Lab → · Contrast checker → · Palette generator →