#18499B#18499B

#18499B is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.4% C 0.144 H 260.3°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#18499B
RGB	rgb(24, 73, 155)
HSL	hsl(218, 73%, 35%)
HSV	hsv(218, 85%, 61%)
CMYK	cmyk(84.5%, 52.9%, 0%, 39.2%)
CIE-LAB	lab(32.54, 15.90, -49.24)
CIE-LCH	lch(32.54, 51.74, 287.90°)
OKLab	oklab(42.37% -0.0243 -0.1419)
OKLCH	oklch(42.37% 0.144 260.3)
XYZ	xyz(8.6735, 7.3248, 31.9607)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18499B #9B6A18

analogous

#188B9B #18499B #28189B

triadic

#18499B #9B1849 #499B18

tetradic

#18499B #9B188B #9B6A18 #189B28

square

#18499B #9B188B #9B6A18 #189B28

split-complementary

#18499B #9B2818 #8B9B18

monochromatic

#081731 #103066 #18499B #2062D0 #4A83E3

Accessibility & contrast

On white

8.52

#18499B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#18499B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18499B

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18499B	#FFFFFF	#000000	##FFFFFF
##18499B	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E539E

Deuteranopia (green-blind)

#004799

Tritanopia (blue-blind)

#005D6B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #18499b;
/* rgb */ color: rgb(24, 73, 155);
/* oklch */ color: oklch(42.4% 0.144 260.3);

Tailwind

colors: {
  custom: {
    50: '#6d7bb9',
    500: '#18499b',
    950: '#000000',
  },
}

SCSS

$custom: #18499b;
$custom-light: #6d7bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#18499b",
  "rgb": {
    "r": 24,
    "g": 73,
    "b": 155
  },
  "hsl": {
    "h": 217.557,
    "s": 73.184,
    "l": 35.098
  },
  "oklch": {
    "l": 0.42368,
    "c": 0.14402,
    "h": 260.3
  },
  "luminance": 0.07326
}

Semantic roles & 50–950 ramp

primary

#18499B

secondary

#C5974A

accent

#AB38F0

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #18499B

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

Preview Lab → · Contrast checker → · Palette generator →