#153B9E#153B9E

#153B9E is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.166 H 264.1°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#153B9E
RGB	rgb(21, 59, 158)
HSL	hsl(223, 77%, 35%)
HSV	hsv(223, 87%, 62%)
CMYK	cmyk(86.7%, 62.7%, 0%, 38%)
CIE-LAB	lab(28.79, 26.47, -57.16)
CIE-LCH	lch(28.79, 62.99, 294.85°)
OKLab	oklab(39.59% -0.0172 -0.1655)
OKLCH	oklch(39.59% 0.166 264.1)
XYZ	xyz(8.0426, 5.7550, 33.0281)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B9E #9E7815

analogous

#157F9E #153B9E #34159E

triadic

#153B9E #9E153B #3B9E15

tetradic

#153B9E #9E157F #9E7815 #159E34

square

#153B9E #9E157F #9E7815 #159E34

split-complementary

#153B9E #9E3415 #7F9E15

monochromatic

#071332 #0E2768 #153B9E #1C4FD4 #4773E7

Accessibility & contrast

On white

9.76

#153B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#153B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B9E

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B9E	#FFFFFF	#000000	##FFFFFF
##153B9E	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA1

Deuteranopia (green-blind)

#003E9C

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #153b9e;
/* rgb */ color: rgb(21, 59, 158);
/* oklch */ color: oklch(39.6% 0.166 264.1);

Tailwind

colors: {
  custom: {
    50: '#6e70bc',
    500: '#153b9e',
    950: '#000000',
  },
}

SCSS

$custom: #153b9e;
$custom-light: #6e70bc;
$custom-dark: #000000;

JSON

{
  "hex": "#153b9e",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 158
  },
  "hsl": {
    "h": 223.358,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39594,
    "c": 0.16641,
    "h": 264.1
  },
  "luminance": 0.05756
}

Semantic roles & 50–950 ramp

primary

#153B9E

secondary

#C7A447

accent

#BE35F3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #153B9E

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

Preview Lab → · Contrast checker → · Palette generator →