#153C55#153C55

#153C55 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.1% C 0.062 H 240.3°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#153C55
RGB	rgb(21, 60, 85)
HSL	hsl(203, 60%, 21%)
HSV	hsv(203, 75%, 33%)
CMYK	cmyk(75.3%, 29.4%, 0%, 66.7%)
CIE-LAB	lab(23.82, -4.30, -19.05)
CIE-LCH	lch(23.82, 19.53, 257.28°)
OKLab	oklab(34.12% -0.0307 -0.0537)
OKLCH	oklch(34.12% 0.062 240.3)
XYZ	xyz(3.5642, 4.0466, 9.1858)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153C55 #552E15

analogous

#15554E #153C55 #151C55

triadic

#153C55 #55153C #3C5515

tetradic

#153C55 #4E1555 #552E15 #1C5515

square

#153C55 #4E1555 #552E15 #1C5515

split-complementary

#153C55 #55151C #554E15

monochromatic

#061119 #091924 #153C55 #215F86 #2D81B7

Accessibility & contrast

On white

11.61

#153C55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#153C55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153C55

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153C55	#FFFFFF	#000000	##FFFFFF
##153C55	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)

#303C56

Deuteranopia (green-blind)

#283655

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #153c55;
/* rgb */ color: rgb(21, 60, 85);
/* oklch */ color: oklch(34.1% 0.062 240.3);

Tailwind

colors: {
  custom: {
    50: '#5c7185',
    500: '#153c55',
    950: '#000000',
  },
}

SCSS

$custom: #153c55;
$custom-light: #5c7185;
$custom-dark: #000000;

JSON

{
  "hex": "#153c55",
  "rgb": {
    "r": 21,
    "g": 60,
    "b": 85
  },
  "hsl": {
    "h": 203.438,
    "s": 60.377,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34122,
    "c": 0.06185,
    "h": 240.3
  },
  "luminance": 0.04047
}

Semantic roles & 50–950 ramp

primary

#153C55

secondary

#8D5A39

accent

#8244E4

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #153C55

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

Preview Lab → · Contrast checker → · Palette generator →