#121A5B#121A5B

#121A5B is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.115 H 270.4°. Best body text is #FFFFFF at 15.85:1 contrast (WCAG AA passes).

Color values

HEX	#121A5B
RGB	rgb(18, 26, 91)
HSL	hsl(233, 67%, 21%)
HSV	hsv(233, 80%, 36%)
CMYK	cmyk(80.2%, 71.4%, 0%, 64.3%)
CIE-LAB	lab(13.37, 22.25, -39.83)
CIE-LCH	lch(13.37, 45.62, 299.18°)
OKLab	oklab(26.21% 0.0009 -0.1152)
OKLCH	oklch(26.21% 0.115 270.4)
XYZ	xyz(2.5065, 1.6225, 10.0766)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121A5B #5B5312

analogous

#123F5B #121A5B #2F125B

triadic

#121A5B #5B121A #1A5B12

tetradic

#121A5B #5B123F #5B5312 #125B2F

square

#121A5B #5B123F #5B5312 #125B2F

split-complementary

#121A5B #5B2F12 #3F5B12

monochromatic

#05071A #080B28 #121A5B #1C298E #2637C1

Accessibility & contrast

On white

15.85

#121A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#121A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121A5B

15.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121A5B	#FFFFFF	#000000	##FFFFFF
##121A5B	1.00	15.85	1.32	15.85
#FFFFFF	15.85	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265D

Deuteranopia (green-blind)

#001F5A

Tritanopia (blue-blind)

#002B38

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #121a5b;
/* rgb */ color: rgb(18, 26, 91);
/* oklch */ color: oklch(26.2% 0.115 270.4);

Tailwind

colors: {
  custom: {
    50: '#5d568a',
    500: '#121a5b',
    950: '#000000',
  },
}

SCSS

$custom: #121a5b;
$custom-light: #5d568a;
$custom-dark: #000000;

JSON

{
  "hex": "#121a5b",
  "rgb": {
    "r": 18,
    "g": 26,
    "b": 91
  },
  "hsl": {
    "h": 233.425,
    "s": 66.972,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26212,
    "c": 0.11522,
    "h": 270.4
  },
  "luminance": 0.01623
}

Semantic roles & 50–950 ramp

primary

#121A5B

secondary

#938935

accent

#D73EEA

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121A5B

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

Preview Lab → · Contrast checker → · Palette generator →