#153B8F#153B8F

#153B8F is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.146 H 263.0°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#153B8F
RGB	rgb(21, 59, 143)
HSL	hsl(221, 74%, 32%)
HSV	hsv(221, 85%, 56%)
CMYK	cmyk(85.3%, 58.7%, 0%, 43.9%)
CIE-LAB	lab(27.49, 20.41, -50.10)
CIE-LCH	lch(27.49, 54.10, 292.16°)
OKLab	oklab(38.22% -0.0178 -0.1448)
OKLCH	oklch(38.22% 0.146 263)
XYZ	xyz(6.8294, 5.2697, 26.6385)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B8F #8F6915

analogous

#15788F #153B8F #2C158F

triadic

#153B8F #8F153B #3B8F15

tetradic

#153B8F #8F1578 #8F6915 #158F2C

square

#153B8F #8F1578 #8F6915 #158F2C

split-complementary

#153B8F #8F2C15 #788F15

monochromatic

#050F24 #0D255A #153B8F #1D51C4 #3C70E2

Accessibility & contrast

On white

10.22

#153B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#153B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B8F

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B8F	#FFFFFF	#000000	##FFFFFF
##153B8F	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003C8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #153b8f;
/* rgb */ color: rgb(21, 59, 143);
/* oklch */ color: oklch(38.2% 0.146 263.0);

Tailwind

colors: {
  custom: {
    50: '#6a70b1',
    500: '#153b8f',
    950: '#000000',
  },
}

SCSS

$custom: #153b8f;
$custom-light: #6a70b1;
$custom-dark: #000000;

JSON

{
  "hex": "#153b8f",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 221.311,
    "s": 74.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38222,
    "c": 0.14591,
    "h": 263
  },
  "luminance": 0.05271
}

Semantic roles & 50–950 ramp

primary

#153B8F

secondary

#C2993E

accent

#B737F1

background

#F6F6FB

surface

#ECECF6

border

#C7C7D0

text

#080711

muted

#7A7A80

Preview Lab

Preview with #153B8F

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

Preview Lab → · Contrast checker → · Palette generator →