#153A7F#153A7F

#153A7F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.6% C 0.125 H 261.4°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#153A7F
RGB	rgb(21, 58, 127)
HSL	hsl(219, 72%, 29%)
HSV	hsv(219, 83%, 50%)
CMYK	cmyk(83.5%, 54.3%, 0%, 50.2%)
CIE-LAB	lab(25.91, 14.50, -42.71)
CIE-LCH	lch(25.91, 45.11, 288.75°)
OKLab	oklab(36.62% -0.0185 -0.1231)
OKLCH	oklch(36.62% 0.125 261.4)
XYZ	xyz(5.6517, 4.7172, 20.6872)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A7F #7F5A15

analogous

#156F7F #153A7F #25157F

triadic

#153A7F #7F153A #3A7F15

tetradic

#153A7F #7F156F #7F5A15 #157F25

square

#153A7F #7F156F #7F5A15 #157F25

split-complementary

#153A7F #7F2515 #6F7F15

monochromatic

#040C1A #0C224A #153A7F #1E52B4 #316DDD

Accessibility & contrast

On white

10.80

#153A7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#153A7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A7F

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A7F	#FFFFFF	#000000	##FFFFFF
##153A7F	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074281

Deuteranopia (green-blind)

#00397E

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #153a7f;
/* rgb */ color: rgb(21, 58, 127);
/* oklch */ color: oklch(36.6% 0.125 261.4);

Tailwind

colors: {
  custom: {
    50: '#666fa5',
    500: '#153a7f',
    950: '#000000',
  },
}

SCSS

$custom: #153a7f;
$custom-light: #666fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#153a7f",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 127
  },
  "hsl": {
    "h": 219.057,
    "s": 71.622,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36624,
    "c": 0.12451,
    "h": 261.4
  },
  "luminance": 0.04718
}

Semantic roles & 50–950 ramp

primary

#153A7F

secondary

#B48A3C

accent

#AF39EE

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #153A7F

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

Preview Lab → · Contrast checker → · Palette generator →