#121A5A#121A5A

#121A5A is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.1% C 0.114 H 270.5°. Best body text is #FFFFFF at 15.89:1 contrast (WCAG AA passes).

Color values

HEX	#121A5A
RGB	rgb(18, 26, 90)
HSL	hsl(233, 67%, 21%)
HSV	hsv(233, 80%, 35%)
CMYK	cmyk(80%, 71.1%, 0%, 64.7%)
CIE-LAB	lab(13.26, 21.84, -39.33)
CIE-LCH	lch(13.26, 44.99, 299.05°)
OKLab	oklab(26.11% 0.001 -0.1138)
OKLCH	oklch(26.11% 0.114 270.5)
XYZ	xyz(2.4637, 1.6053, 9.8509)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121A5A #5A5212

analogous

#123E5A #121A5A #2E125A

triadic

#121A5A #5A121A #1A5A12

tetradic

#121A5A #5A123E #5A5212 #125A2E

square

#121A5A #5A123E #5A5212 #125A2E

split-complementary

#121A5A #5A2E12 #3E5A12

monochromatic

#05071A #080B27 #121A5A #1C298D #2637C0

Accessibility & contrast

On white

15.89

#121A5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#121A5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121A5A

15.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121A5A	#FFFFFF	#000000	##FFFFFF
##121A5A	1.00	15.89	1.32	15.89
#FFFFFF	15.89	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265C

Deuteranopia (green-blind)

#001F59

Tritanopia (blue-blind)

#002B37

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #121a5a;
/* rgb */ color: rgb(18, 26, 90);
/* oklch */ color: oklch(26.1% 0.114 270.5);

Tailwind

colors: {
  custom: {
    50: '#5d5689',
    500: '#121a5a',
    950: '#000000',
  },
}

SCSS

$custom: #121a5a;
$custom-light: #5d5689;
$custom-dark: #000000;

JSON

{
  "hex": "#121a5a",
  "rgb": {
    "r": 18,
    "g": 26,
    "b": 90
  },
  "hsl": {
    "h": 233.333,
    "s": 66.667,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26105,
    "c": 0.11376,
    "h": 270.5
  },
  "luminance": 0.01606
}

Semantic roles & 50–950 ramp

primary

#121A5A

secondary

#938835

accent

#D73EEA

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121A5A

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

Preview Lab → · Contrast checker → · Palette generator →