#123581#123581

#123581 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.135 H 262.9°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#123581
RGB	rgb(18, 53, 129)
HSL	hsl(221, 76%, 29%)
HSV	hsv(221, 86%, 51%)
CMYK	cmyk(86%, 58.9%, 0%, 49.4%)
CIE-LAB	lab(24.51, 18.59, -46.25)
CIE-LCH	lch(24.51, 49.85, 291.90°)
OKLab	oklab(35.59% -0.0168 -0.1337)
OKLCH	oklch(35.59% 0.135 262.9)
XYZ	xyz(5.4836, 4.2591, 21.2977)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123581 #815E12

analogous

#126D81 #123581 #271281

triadic

#123581 #811235 #358112

tetradic

#123581 #81126D #815E12 #128127

square

#123581 #81126D #815E12 #128127

split-complementary

#123581 #812712 #6D8112

monochromatic

#040B1B #0B1F4B #123581 #194BB7 #2C65E2

Accessibility & contrast

On white

11.34

#123581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#123581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123581

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123581	#FFFFFF	#000000	##FFFFFF
##123581	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F84

Deuteranopia (green-blind)

#003580

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123581;
/* rgb */ color: rgb(18, 53, 129);
/* oklch */ color: oklch(35.6% 0.135 262.9);

Tailwind

colors: {
  custom: {
    50: '#666ba6',
    500: '#123581',
    950: '#000000',
  },
}

SCSS

$custom: #123581;
$custom-light: #666ba6;
$custom-dark: #000000;

JSON

{
  "hex": "#123581",
  "rgb": {
    "r": 18,
    "g": 53,
    "b": 129
  },
  "hsl": {
    "h": 221.081,
    "s": 75.51,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35586,
    "c": 0.13471,
    "h": 262.9
  },
  "luminance": 0.0426
}

Semantic roles & 50–950 ramp

primary

#123581

secondary

#B78F38

accent

#B736F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #123581

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

Preview Lab → · Contrast checker → · Palette generator →