#123E9F#123E9F

#123E9F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.165 H 262.9°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#123E9F
RGB	rgb(18, 62, 159)
HSL	hsl(221, 80%, 35%)
HSV	hsv(221, 89%, 62%)
CMYK	cmyk(88.7%, 61%, 0%, 37.6%)
CIE-LAB	lab(29.60, 24.62, -56.44)
CIE-LCH	lch(29.60, 61.57, 293.57°)
OKLab	oklab(40.21% -0.0204 -0.1634)
OKLCH	oklch(40.21% 0.165 262.9)
XYZ	xyz(8.2278, 6.0760, 33.5333)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E9F #9F7312

analogous

#12849F #123E9F #2D129F

triadic

#123E9F #9F123E #3E9F12

tetradic

#123E9F #9F1284 #9F7312 #129F2D

square

#123E9F #9F1284 #9F7312 #129F2D

split-complementary

#123E9F #9F2D12 #849F12

monochromatic

#061331 #0C2968 #123E9F #1853D6 #4276EA

Accessibility & contrast

On white

9.48

#123E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#123E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E9F

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E9F	#FFFFFF	#000000	##FFFFFF
##123E9F	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #123e9f;
/* rgb */ color: rgb(18, 62, 159);
/* oklch */ color: oklch(40.2% 0.165 262.9);

Tailwind

colors: {
  custom: {
    50: '#6e72bc',
    500: '#123e9f',
    950: '#000000',
  },
}

SCSS

$custom: #123e9f;
$custom-light: #6e72bc;
$custom-dark: #000000;

JSON

{
  "hex": "#123e9f",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 159
  },
  "hsl": {
    "h": 221.277,
    "s": 79.661,
    "l": 34.706
  },
  "oklch": {
    "l": 0.40209,
    "c": 0.16465,
    "h": 262.9
  },
  "luminance": 0.06077
}

Semantic roles & 50–950 ramp

primary

#123E9F

secondary

#CAA043

accent

#B932F6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #123E9F

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

Preview Lab → · Contrast checker → · Palette generator →