#121B4F#121B4F

#121B4F is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.096 H 270.4°. Best body text is #FFFFFF at 16.21:1 contrast (WCAG AA passes).

Color values

HEX	#121B4F
RGB	rgb(18, 27, 79)
HSL	hsl(231, 63%, 19%)
HSV	hsv(231, 77%, 31%)
CMYK	cmyk(77.2%, 65.8%, 0%, 69%)
CIE-LAB	lab(12.46, 16.56, -33.18)
CIE-LCH	lch(12.46, 37.08, 296.52°)
OKLab	oklab(25.18% 0.0007 -0.0957)
OKLCH	oklch(25.18% 0.096 270.4)
XYZ	xyz(2.0522, 1.4768, 7.5725)
Luminance	0.0148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B4F #4F4612

analogous

#123A4F #121B4F #28124F

triadic

#121B4F #4F121B #1B4F12

tetradic

#121B4F #4F123A #4F4612 #124F28

square

#121B4F #4F123A #4F4612 #124F28

split-complementary

#121B4F #4F2812 #3A4F12

monochromatic

#060919 #070A1D #121B4F #1D2C81 #293DB3

Accessibility & contrast

On white

16.21

#121B4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#121B4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B4F

16.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B4F	#FFFFFF	#000000	##FFFFFF
##121B4F	1.00	16.21	1.30	16.21
#FFFFFF	16.21	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002351

Deuteranopia (green-blind)

#001E4E

Tritanopia (blue-blind)

#002832

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121b4f;
/* rgb */ color: rgb(18, 27, 79);
/* oklch */ color: oklch(25.2% 0.096 270.4);

Tailwind

colors: {
  custom: {
    50: '#5a5781',
    500: '#121b4f',
    950: '#000000',
  },
}

SCSS

$custom: #121b4f;
$custom-light: #5a5781;
$custom-dark: #000000;

JSON

{
  "hex": "#121b4f",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 79
  },
  "hsl": {
    "h": 231.148,
    "s": 62.887,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25179,
    "c": 0.09571,
    "h": 270.4
  },
  "luminance": 0.01477
}

Semantic roles & 50–950 ramp

primary

#121B4F

secondary

#887C35

accent

#CE42E6

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #121B4F

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

Preview Lab → · Contrast checker → · Palette generator →