#153F5F#153F5F

#153F5F is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.072 H 245.1°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#153F5F
RGB	rgb(21, 63, 95)
HSL	hsl(206, 64%, 23%)
HSV	hsv(206, 78%, 37%)
CMYK	cmyk(77.9%, 33.7%, 0%, 62.7%)
CIE-LAB	lab(25.38, -2.29, -23.14)
CIE-LCH	lch(25.38, 23.25, 264.36°)
OKLab	oklab(35.53% -0.0305 -0.0656)
OKLCH	oklch(35.53% 0.072 245.1)
XYZ	xyz(4.1515, 4.5402, 11.4818)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F5F #5F3515

analogous

#155F5A #153F5F #151A5F

triadic

#153F5F #5F153F #3F5F15

tetradic

#153F5F #5A155F #5F3515 #1A5F15

square

#153F5F #5A155F #5F3515 #1A5F15

split-complementary

#153F5F #5F151A #5F5A15

monochromatic

#061119 #0A1E2D #153F5F #206091 #2B81C3

Accessibility & contrast

On white

11.01

#153F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#153F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F5F

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F5F	#FFFFFF	#000000	##FFFFFF
##153F5F	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304060

Deuteranopia (green-blind)

#26395E

Tritanopia (blue-blind)

#00474A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #153f5f;
/* rgb */ color: rgb(21, 63, 95);
/* oklch */ color: oklch(35.5% 0.072 245.1);

Tailwind

colors: {
  custom: {
    50: '#5e738c',
    500: '#153f5f',
    950: '#000000',
  },
}

SCSS

$custom: #153f5f;
$custom-light: #5e738c;
$custom-dark: #000000;

JSON

{
  "hex": "#153f5f",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 95
  },
  "hsl": {
    "h": 205.946,
    "s": 63.793,
    "l": 22.745
  },
  "oklch": {
    "l": 0.3553,
    "c": 0.07229,
    "h": 245.1
  },
  "luminance": 0.04541
}

Semantic roles & 50–950 ramp

primary

#153F5F

secondary

#96623A

accent

#8941E7

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #153F5F

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

Preview Lab → · Contrast checker → · Palette generator →