#18397B#18397B

#18397B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.119 H 262.2°. Best body text is #FFFFFF at 10.99:1 contrast (WCAG AA passes).

Color values

HEX	#18397B
RGB	rgb(24, 57, 123)
HSL	hsl(220, 67%, 29%)
HSV	hsv(220, 80%, 48%)
CMYK	cmyk(80.5%, 53.7%, 0%, 51.8%)
CIE-LAB	lab(25.41, 13.88, -41.00)
CIE-LCH	lch(25.41, 43.29, 288.70°)
OKLab	oklab(36.18% -0.0161 -0.1181)
OKLCH	oklch(36.18% 0.119 262.2)
XYZ	xyz(5.4137, 4.5499, 19.3279)
Luminance	0.0455 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18397B #7B5A18

analogous

#186B7B #18397B #29187B

triadic

#18397B #7B1839 #397B18

tetradic

#18397B #7B186B #7B5A18 #187B29

square

#18397B #7B186B #7B5A18 #187B29

split-complementary

#18397B #7B2918 #6B7B18

monochromatic

#050C1A #0E2148 #18397B #2251AE #366CD8

Accessibility & contrast

On white

10.99

#18397B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#18397B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18397B

10.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18397B	#FFFFFF	#000000	##FFFFFF
##18397B	1.00	10.99	1.91	10.99
#FFFFFF	10.99	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D417D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18397b;
/* rgb */ color: rgb(24, 57, 123);
/* oklch */ color: oklch(36.2% 0.119 262.2);

Tailwind

colors: {
  custom: {
    50: '#666ea2',
    500: '#18397b',
    950: '#000000',
  },
}

SCSS

$custom: #18397b;
$custom-light: #666ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#18397b",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 123
  },
  "hsl": {
    "h": 220,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36175,
    "c": 0.11915,
    "h": 262.2
  },
  "luminance": 0.04551
}

Semantic roles & 50–950 ramp

primary

#18397B

secondary

#B08A3F

accent

#B13EEA

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18397B

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

Preview Lab → · Contrast checker → · Palette generator →