#153F7C#153F7C

#153F7C is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.5% C 0.114 H 258.3°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#153F7C
RGB	rgb(21, 63, 124)
HSL	hsl(216, 71%, 28%)
HSV	hsv(216, 83%, 49%)
CMYK	cmyk(83.1%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(27.21, 9.73, -38.73)
CIE-LCH	lch(27.21, 39.94, 284.10°)
OKLab	oklab(37.55% -0.023 -0.1113)
OKLCH	oklch(37.55% 0.114 258.3)
XYZ	xyz(5.7235, 5.1690, 19.7609)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F7C #7C5215

analogous

#15727C #153F7C #1E157C

triadic

#153F7C #7C153F #3F7C15

tetradic

#153F7C #7C1572 #7C5215 #157C1E

square

#153F7C #7C1572 #7C5215 #157C1E

split-complementary

#153F7C #7C1E15 #727C15

monochromatic

#040D1A #0C2448 #153F7C #1E5AB0 #3076DC

Accessibility & contrast

On white

10.32

#153F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#153F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F7C

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F7C	#FFFFFF	#000000	##FFFFFF
##153F7C	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D457E

Deuteranopia (green-blind)

#003C7B

Tritanopia (blue-blind)

#004E57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #153f7c;
/* rgb */ color: rgb(21, 63, 124);
/* oklch */ color: oklch(37.5% 0.114 258.3);

Tailwind

colors: {
  custom: {
    50: '#6573a2',
    500: '#153f7c',
    950: '#000000',
  },
}

SCSS

$custom: #153f7c;
$custom-light: #6573a2;
$custom-dark: #000000;

JSON

{
  "hex": "#153f7c",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 215.534,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37547,
    "c": 0.11365,
    "h": 258.3
  },
  "luminance": 0.0517
}

Semantic roles & 50–950 ramp

primary

#153F7C

secondary

#B1813C

accent

#A43AEE

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #153F7C

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

Preview Lab → · Contrast checker → · Palette generator →