#183F93#183F93

#183F93 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.5% C 0.146 H 262.8°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#183F93
RGB	rgb(24, 63, 147)
HSL	hsl(221, 72%, 34%)
HSV	hsv(221, 84%, 58%)
CMYK	cmyk(83.7%, 57.1%, 0%, 42.4%)
CIE-LAB	lab(29.04, 19.53, -50.03)
CIE-LCH	lch(29.04, 53.71, 291.32°)
OKLab	oklab(39.52% -0.0182 -0.1445)
OKLCH	oklch(39.52% 0.146 262.8)
XYZ	xyz(7.4188, 5.8549, 28.3372)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F93 #936C18

analogous

#187C93 #183F93 #2F1893

triadic

#183F93 #93183F #3F9318

tetradic

#183F93 #93187C #936C18 #18932F

square

#183F93 #93187C #936C18 #18932F

split-complementary

#183F93 #932F18 #7C9318

monochromatic

#07122A #0F285E #183F93 #2156C8 #4576E1

Accessibility & contrast

On white

9.67

#183F93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#183F93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F93

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F93	#FFFFFF	#000000	##FFFFFF
##183F93	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A96

Deuteranopia (green-blind)

#003F91

Tritanopia (blue-blind)

#005462

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #183f93;
/* rgb */ color: rgb(24, 63, 147);
/* oklch */ color: oklch(39.5% 0.146 262.8);

Tailwind

colors: {
  custom: {
    50: '#6c73b3',
    500: '#183f93',
    950: '#000000',
  },
}

SCSS

$custom: #183f93;
$custom-light: #6c73b3;
$custom-dark: #000000;

JSON

{
  "hex": "#183f93",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 147
  },
  "hsl": {
    "h": 220.976,
    "s": 71.93,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39522,
    "c": 0.14563,
    "h": 262.8
  },
  "luminance": 0.05856
}

Semantic roles & 50–950 ramp

primary

#183F93

secondary

#C29A45

accent

#B539EF

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #183F93

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

Preview Lab → · Contrast checker → · Palette generator →