#18457B#18457B

#18457B is a dark, moderate cyan. Relative luminance 0.059; OKLCH L 39.0% C 0.104 H 255.1°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#18457B
RGB	rgb(24, 69, 123)
HSL	hsl(213, 67%, 29%)
HSV	hsv(213, 80%, 48%)
CMYK	cmyk(80.5%, 43.9%, 0%, 51.8%)
CIE-LAB	lab(29.11, 5.52, -35.06)
CIE-LCH	lch(29.11, 35.49, 278.95°)
OKLab	oklab(39.02% -0.0267 -0.1003)
OKLCH	oklch(39.02% 0.104 255.1)
XYZ	xyz(6.0786, 5.8798, 19.5496)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18457B #7B4E18

analogous

#18777B #18457B #1C187B

triadic

#18457B #7B1845 #457B18

tetradic

#18457B #7B1877 #7B4E18 #187B1C

square

#18457B #7B1877 #7B4E18 #187B1C

split-complementary

#18457B #7B1C18 #777B18

monochromatic

#050E1A #0E2848 #18457B #2262AE #367FD8

Accessibility & contrast

On white

9.65

#18457B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#18457B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18457B

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18457B	#FFFFFF	#000000	##FFFFFF
##18457B	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A497D

Deuteranopia (green-blind)

#18407A

Tritanopia (blue-blind)

#00525A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #18457b;
/* rgb */ color: rgb(24, 69, 123);
/* oklch */ color: oklch(39.0% 0.104 255.1);

Tailwind

colors: {
  custom: {
    50: '#6578a1',
    500: '#18457b',
    950: '#000000',
  },
}

SCSS

$custom: #18457b;
$custom-light: #6578a1;
$custom-dark: #000000;

JSON

{
  "hex": "#18457b",
  "rgb": {
    "r": 24,
    "g": 69,
    "b": 123
  },
  "hsl": {
    "h": 212.727,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.39019,
    "c": 0.1038,
    "h": 255.1
  },
  "luminance": 0.0588
}

Semantic roles & 50–950 ramp

primary

#18457B

secondary

#B07D3F

accent

#9C3EEA

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #18457B

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

Preview Lab → · Contrast checker → · Palette generator →