#153B8E#153B8E

#153B8E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.145 H 262.9°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#153B8E
RGB	rgb(21, 59, 142)
HSL	hsl(221, 74%, 32%)
HSV	hsv(221, 85%, 56%)
CMYK	cmyk(85.2%, 58.5%, 0%, 44.3%)
CIE-LAB	lab(27.41, 20.00, -49.62)
CIE-LCH	lch(27.41, 53.50, 291.95°)
OKLab	oklab(38.13% -0.0178 -0.1434)
OKLCH	oklch(38.13% 0.145 262.9)
XYZ	xyz(6.7540, 5.2395, 26.2413)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B8E #8E6815

analogous

#15788E #153B8E #2C158E

triadic

#153B8E #8E153B #3B8E15

tetradic

#153B8E #8E1578 #8E6815 #158E2C

square

#153B8E #8E1578 #8E6815 #158E2C

split-complementary

#153B8E #8E2C15 #788E15

monochromatic

#050F23 #0D2559 #153B8E #1D51C3 #3B70E2

Accessibility & contrast

On white

10.25

#153B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#153B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B8E

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B8E	#FFFFFF	#000000	##FFFFFF
##153B8E	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004691

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #153b8e;
/* rgb */ color: rgb(21, 59, 142);
/* oklch */ color: oklch(38.1% 0.145 262.9);

Tailwind

colors: {
  custom: {
    50: '#6a70b0',
    500: '#153b8e',
    950: '#000000',
  },
}

SCSS

$custom: #153b8e;
$custom-light: #6a70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#153b8e",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 142
  },
  "hsl": {
    "h": 221.157,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38134,
    "c": 0.14452,
    "h": 262.9
  },
  "luminance": 0.0524
}

Semantic roles & 50–950 ramp

primary

#153B8E

secondary

#C2983D

accent

#B637F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #153B8E

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

Preview Lab → · Contrast checker → · Palette generator →