#123D81#123D81

#123D81 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.4% C 0.124 H 259.6°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#123D81
RGB	rgb(18, 61, 129)
HSL	hsl(217, 76%, 29%)
HSV	hsv(217, 86%, 51%)
CMYK	cmyk(86%, 52.7%, 0%, 49.4%)
CIE-LAB	lab(26.88, 12.92, -42.41)
CIE-LCH	lch(26.88, 44.33, 286.95°)
OKLab	oklab(37.38% -0.0224 -0.1222)
OKLCH	oklch(37.38% 0.124 259.6)
XYZ	xyz(5.8792, 5.0503, 21.4296)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D81 #815612

analogous

#127581 #123D81 #1F1281

triadic

#123D81 #81123D #3D8112

tetradic

#123D81 #811275 #815612 #12811F

square

#123D81 #811275 #815612 #12811F

split-complementary

#123D81 #811F12 #758112

monochromatic

#040D1B #0B244B #123D81 #1956B7 #2C72E2

Accessibility & contrast

On white

10.45

#123D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#123D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D81

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D81	#FFFFFF	#000000	##FFFFFF
##123D81	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104583

Deuteranopia (green-blind)

#003B80

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #123d81;
/* rgb */ color: rgb(18, 61, 129);
/* oklch */ color: oklch(37.4% 0.124 259.6);

Tailwind

colors: {
  custom: {
    50: '#6571a6',
    500: '#123d81',
    950: '#000000',
  },
}

SCSS

$custom: #123d81;
$custom-light: #6571a6;
$custom-dark: #000000;

JSON

{
  "hex": "#123d81",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 129
  },
  "hsl": {
    "h": 216.757,
    "s": 75.51,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37383,
    "c": 0.12424,
    "h": 259.6
  },
  "luminance": 0.05051
}

Semantic roles & 50–950 ramp

primary

#123D81

secondary

#B78638

accent

#A936F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #123D81

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

Preview Lab → · Contrast checker → · Palette generator →