#18438B#18438B

#18438B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.7% C 0.129 H 260.2°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#18438B
RGB	rgb(24, 67, 139)
HSL	hsl(218, 71%, 32%)
HSV	hsv(218, 83%, 55%)
CMYK	cmyk(82.7%, 51.8%, 0%, 45.5%)
CIE-LAB	lab(29.59, 13.48, -44.22)
CIE-LCH	lch(29.59, 46.23, 286.96°)
OKLab	oklab(39.75% -0.022 -0.1273)
OKLCH	oklch(39.75% 0.129 260.2)
XYZ	xyz(7.0423, 6.0717, 25.2219)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18438B #8B6018

analogous

#187D8B #18438B #26188B

triadic

#18438B #8B1843 #438B18

tetradic

#18438B #8B187D #8B6018 #188B26

square

#18438B #8B187D #8B6018 #188B26

split-complementary

#18438B #8B2618 #7D8B18

monochromatic

#061123 #0F2A57 #18438B #215CBF #3F7BDE

Accessibility & contrast

On white

9.48

#18438B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#18438B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18438B

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18438B	#FFFFFF	#000000	##FFFFFF
##18438B	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154B8E

Deuteranopia (green-blind)

#00418A

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #18438b;
/* rgb */ color: rgb(24, 67, 139);
/* oklch */ color: oklch(39.7% 0.129 260.2);

Tailwind

colors: {
  custom: {
    50: '#6976ad',
    500: '#18438b',
    950: '#000000',
  },
}

SCSS

$custom: #18438b;
$custom-light: #6976ad;
$custom-dark: #000000;

JSON

{
  "hex": "#18438b",
  "rgb": {
    "r": 24,
    "g": 67,
    "b": 139
  },
  "hsl": {
    "h": 217.565,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39746,
    "c": 0.1292,
    "h": 260.2
  },
  "luminance": 0.06073
}

Semantic roles & 50–950 ramp

primary

#18438B

secondary

#BE8F40

accent

#AA3AED

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #18438B

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

Preview Lab → · Contrast checker → · Palette generator →