#121B4E#121B4E

#121B4E is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.094 H 270.4°. Best body text is #FFFFFF at 16.25:1 contrast (WCAG AA passes).

Color values

HEX	#121B4E
RGB	rgb(18, 27, 78)
HSL	hsl(231, 63%, 19%)
HSV	hsv(231, 77%, 31%)
CMYK	cmyk(76.9%, 65.4%, 0%, 69.4%)
CIE-LAB	lab(12.37, 16.14, -32.65)
CIE-LCH	lch(12.37, 36.42, 296.31°)
OKLab	oklab(25.08% 0.0007 -0.0941)
OKLCH	oklch(25.08% 0.094 270.4)
XYZ	xyz(2.0161, 1.4623, 7.3823)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B4E #4E4512

analogous

#12394E #121B4E #27124E

triadic

#121B4E #4E121B #1B4E12

tetradic

#121B4E #4E1239 #4E4512 #124E27

square

#121B4E #4E1239 #4E4512 #124E27

split-complementary

#121B4E #4E2712 #394E12

monochromatic

#060919 #070A1C #121B4E #1D2C80 #293DB1

Accessibility & contrast

On white

16.25

#121B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#121B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B4E

16.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B4E	#FFFFFF	#000000	##FFFFFF
##121B4E	1.00	16.25	1.29	16.25
#FFFFFF	16.25	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002350

Deuteranopia (green-blind)

#001E4D

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121b4e;
/* rgb */ color: rgb(18, 27, 78);
/* oklch */ color: oklch(25.1% 0.094 270.4);

Tailwind

colors: {
  custom: {
    50: '#5a5780',
    500: '#121b4e',
    950: '#000000',
  },
}

SCSS

$custom: #121b4e;
$custom-light: #5a5780;
$custom-dark: #000000;

JSON

{
  "hex": "#121b4e",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 78
  },
  "hsl": {
    "h": 231,
    "s": 62.5,
    "l": 18.824
  },
  "oklch": {
    "l": 0.25081,
    "c": 0.09414,
    "h": 270.4
  },
  "luminance": 0.01463
}

Semantic roles & 50–950 ramp

primary

#121B4E

secondary

#877B35

accent

#CD42E6

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #121B4E

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

Preview Lab → · Contrast checker → · Palette generator →