#123580#123580

#123580 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.133 H 262.7°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#123580
RGB	rgb(18, 53, 128)
HSL	hsl(221, 75%, 29%)
HSV	hsv(221, 86%, 50%)
CMYK	cmyk(85.9%, 58.6%, 0%, 49.8%)
CIE-LAB	lab(24.43, 18.17, -45.76)
CIE-LCH	lch(24.43, 49.24, 291.66°)
OKLab	oklab(35.5% -0.0168 -0.1322)
OKLCH	oklch(35.5% 0.133 262.7)
XYZ	xyz(5.4174, 4.2327, 20.9493)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123580 #805D12

analogous

#126C80 #123580 #261280

triadic

#123580 #801235 #358012

tetradic

#123580 #80126C #805D12 #128026

square

#123580 #80126C #805D12 #128026

split-complementary

#123580 #802612 #6C8012

monochromatic

#040B1B #0A1F4A #123580 #1A4BB6 #2B65E1

Accessibility & contrast

On white

11.37

#123580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#123580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123580

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123580	#FFFFFF	#000000	##FFFFFF
##123580	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F83

Deuteranopia (green-blind)

#00357F

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123580;
/* rgb */ color: rgb(18, 53, 128);
/* oklch */ color: oklch(35.5% 0.133 262.7);

Tailwind

colors: {
  custom: {
    50: '#666ba5',
    500: '#123580',
    950: '#000000',
  },
}

SCSS

$custom: #123580;
$custom-light: #666ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#123580",
  "rgb": {
    "r": 18,
    "g": 53,
    "b": 128
  },
  "hsl": {
    "h": 220.909,
    "s": 75.342,
    "l": 28.627
  },
  "oklch": {
    "l": 0.35496,
    "c": 0.13329,
    "h": 262.7
  },
  "luminance": 0.04233
}

Semantic roles & 50–950 ramp

primary

#123580

secondary

#B68E38

accent

#B636F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #123580

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

Preview Lab → · Contrast checker → · Palette generator →