#153F8F#153F8F

#153F8F is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.141 H 261.7°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#153F8F
RGB	rgb(21, 63, 143)
HSL	hsl(219, 74%, 32%)
HSV	hsv(219, 85%, 56%)
CMYK	cmyk(85.3%, 55.9%, 0%, 43.9%)
CIE-LAB	lab(28.63, 17.62, -48.24)
CIE-LCH	lch(28.63, 51.36, 290.07°)
OKLab	oklab(39.09% -0.0204 -0.1393)
OKLCH	oklch(39.09% 0.141 261.7)
XYZ	xyz(7.0429, 5.6967, 26.7097)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F8F #8F6515

analogous

#157C8F #153F8F #28158F

triadic

#153F8F #8F153F #3F8F15

tetradic

#153F8F #8F157C #8F6515 #158F28

square

#153F8F #8F157C #8F6515 #158F28

split-complementary

#153F8F #8F2815 #7C8F15

monochromatic

#051024 #0D275A #153F8F #1D57C4 #3C75E2

Accessibility & contrast

On white

9.81

#153F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#153F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F8F

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F8F	#FFFFFF	#000000	##FFFFFF
##153F8F	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004992

Deuteranopia (green-blind)

#003E8D

Tritanopia (blue-blind)

#005360

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #153f8f;
/* rgb */ color: rgb(21, 63, 143);
/* oklch */ color: oklch(39.1% 0.141 261.7);

Tailwind

colors: {
  custom: {
    50: '#6a73b0',
    500: '#153f8f',
    950: '#000000',
  },
}

SCSS

$custom: #153f8f;
$custom-light: #6a73b0;
$custom-dark: #000000;

JSON

{
  "hex": "#153f8f",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 143
  },
  "hsl": {
    "h": 219.344,
    "s": 74.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.39087,
    "c": 0.14077,
    "h": 261.7
  },
  "luminance": 0.05698
}

Semantic roles & 50–950 ramp

primary

#153F8F

secondary

#C2953E

accent

#B137F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080811

muted

#7A7B80

Preview Lab

Preview with #153F8F

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

Preview Lab → · Contrast checker → · Palette generator →