#123B9E#123B9E

#123B9E is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.167 H 263.5°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#123B9E
RGB	rgb(18, 59, 158)
HSL	hsl(222, 80%, 35%)
HSV	hsv(222, 89%, 62%)
CMYK	cmyk(88.6%, 62.7%, 0%, 38%)
CIE-LAB	lab(28.71, 26.27, -57.30)
CIE-LCH	lch(28.71, 63.03, 294.63°)
OKLab	oklab(39.51% -0.0189 -0.166)
OKLCH	oklch(39.51% 0.167 263.5)
XYZ	xyz(7.9828, 5.7241, 33.0252)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B9E #9E7512

analogous

#12819E #123B9E #2F129E

triadic

#123B9E #9E123B #3B9E12

tetradic

#123B9E #9E1281 #9E7512 #129E2F

square

#123B9E #9E1281 #9E7512 #129E2F

split-complementary

#123B9E #9E2F12 #819E12

monochromatic

#051230 #0C2667 #123B9E #1850D5 #4172E9

Accessibility & contrast

On white

9.79

#123B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#123B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B9E

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B9E	#FFFFFF	#000000	##FFFFFF
##123B9E	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA1

Deuteranopia (green-blind)

#003D9C

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #123b9e;
/* rgb */ color: rgb(18, 59, 158);
/* oklch */ color: oklch(39.5% 0.167 263.5);

Tailwind

colors: {
  custom: {
    50: '#6e70bc',
    500: '#123b9e',
    950: '#000000',
  },
}

SCSS

$custom: #123b9e;
$custom-light: #6e70bc;
$custom-dark: #000000;

JSON

{
  "hex": "#123b9e",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 158
  },
  "hsl": {
    "h": 222.429,
    "s": 79.545,
    "l": 34.51
  },
  "oklch": {
    "l": 0.39512,
    "c": 0.16704,
    "h": 263.5
  },
  "luminance": 0.05725
}

Semantic roles & 50–950 ramp

primary

#123B9E

secondary

#C9A242

accent

#BD32F6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #123B9E

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

Preview Lab → · Contrast checker → · Palette generator →