#183EA0#183EA0

#183EA0 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.165 H 264.1°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#183EA0
RGB	rgb(24, 62, 160)
HSL	hsl(223, 74%, 36%)
HSV	hsv(223, 85%, 63%)
CMYK	cmyk(85%, 61.2%, 0%, 37.3%)
CIE-LAB	lab(29.85, 25.44, -56.63)
CIE-LCH	lch(29.85, 62.08, 294.20°)
OKLab	oklab(40.47% -0.0169 -0.1639)
OKLCH	oklch(40.47% 0.165 264.1)
XYZ	xyz(8.4422, 6.1765, 33.9981)
Luminance	0.0618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183EA0 #A07A18

analogous

#1882A0 #183EA0 #3618A0

triadic

#183EA0 #A0183E #3EA018

tetradic

#183EA0 #A01882 #A07A18 #18A036

square

#183EA0 #A01882 #A07A18 #18A036

split-complementary

#183EA0 #A03618 #82A018

monochromatic

#081536 #10296B #183EA0 #2053D5 #4E78E4

Accessibility & contrast

On white

9.39

#183EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#183EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183EA0

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183EA0	#FFFFFF	#000000	##FFFFFF
##183EA0	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA3

Deuteranopia (green-blind)

#00409E

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #183ea0;
/* rgb */ color: rgb(24, 62, 160);
/* oklch */ color: oklch(40.5% 0.165 264.1);

Tailwind

colors: {
  custom: {
    50: '#6f72bd',
    500: '#183ea0',
    950: '#000000',
  },
}

SCSS

$custom: #183ea0;
$custom-light: #6f72bd;
$custom-dark: #000000;

JSON

{
  "hex": "#183ea0",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 160
  },
  "hsl": {
    "h": 223.235,
    "s": 73.913,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40469,
    "c": 0.16473,
    "h": 264.1
  },
  "luminance": 0.06178
}

Semantic roles & 50–950 ramp

primary

#183EA0

secondary

#C6A54D

accent

#BD37F1

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #183EA0

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

Preview Lab → · Contrast checker → · Palette generator →