#123F9F#123F9F

#123F9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.4% C 0.163 H 262.6°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#123F9F
RGB	rgb(18, 63, 159)
HSL	hsl(221, 80%, 35%)
HSV	hsv(221, 89%, 62%)
CMYK	cmyk(88.7%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(29.88, 23.93, -55.99)
CIE-LCH	lch(29.88, 60.89, 293.14°)
OKLab	oklab(40.41% -0.021 -0.1621)
OKLCH	oklch(40.41% 0.163 262.6)
XYZ	xyz(8.2827, 6.1858, 33.5516)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F9F #9F7212

analogous

#12869F #123F9F #2C129F

triadic

#123F9F #9F123F #3F9F12

tetradic

#123F9F #9F1286 #9F7212 #129F2C

square

#123F9F #9F1286 #9F7212 #129F2C

split-complementary

#123F9F #9F2C12 #869F12

monochromatic

#061331 #0C2968 #123F9F #1855D6 #4277EA

Accessibility & contrast

On white

9.39

#123F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#123F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F9F

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F9F	#FFFFFF	#000000	##FFFFFF
##123F9F	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005868

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #123f9f;
/* rgb */ color: rgb(18, 63, 159);
/* oklch */ color: oklch(40.4% 0.163 262.6);

Tailwind

colors: {
  custom: {
    50: '#6e73bc',
    500: '#123f9f',
    950: '#000000',
  },
}

SCSS

$custom: #123f9f;
$custom-light: #6e73bc;
$custom-dark: #000000;

JSON

{
  "hex": "#123f9f",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 220.851,
    "s": 79.661,
    "l": 34.706
  },
  "oklch": {
    "l": 0.40413,
    "c": 0.16341,
    "h": 262.6
  },
  "luminance": 0.06187
}

Semantic roles & 50–950 ramp

primary

#123F9F

secondary

#CA9F43

accent

#B732F6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #123F9F

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

Preview Lab → · Contrast checker → · Palette generator →