#121B5F#121B5F

#121B5F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.8% C 0.120 H 270.0°. Best body text is #FFFFFF at 15.58:1 contrast (WCAG AA passes).

Color values

HEX	#121B5F
RGB	rgb(18, 27, 95)
HSL	hsl(233, 68%, 22%)
HSV	hsv(233, 81%, 37%)
CMYK	cmyk(81.1%, 71.6%, 0%, 62.7%)
CIE-LAB	lab(14.05, 23.15, -41.39)
CIE-LCH	lch(14.05, 47.42, 299.22°)
OKLab	oklab(26.84% -0.0001 -0.1198)
OKLCH	oklch(26.84% 0.12 270)
XYZ	xyz(2.7062, 1.7384, 11.0172)
Luminance	0.0174 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B5F #5F5612

analogous

#12425F #121B5F #30125F

triadic

#121B5F #5F121B #1B5F12

tetradic

#121B5F #5F1242 #5F5612 #125F30

square

#121B5F #5F1242 #5F5612 #125F30

split-complementary

#121B5F #5F3012 #425F12

monochromatic

#05071A #080C2C #121B5F #1C2A92 #2538C6

Accessibility & contrast

On white

15.58

#121B5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#121B5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B5F

15.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B5F	#FFFFFF	#000000	##FFFFFF
##121B5F	1.00	15.58	1.35	15.58
#FFFFFF	15.58	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002761

Deuteranopia (green-blind)

#00205E

Tritanopia (blue-blind)

#002D3A

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #121b5f;
/* rgb */ color: rgb(18, 27, 95);
/* oklch */ color: oklch(26.8% 0.120 270.0);

Tailwind

colors: {
  custom: {
    50: '#5e578d',
    500: '#121b5f',
    950: '#000000',
  },
}

SCSS

$custom: #121b5f;
$custom-light: #5e578d;
$custom-dark: #000000;

JSON

{
  "hex": "#121b5f",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 95
  },
  "hsl": {
    "h": 232.987,
    "s": 68.142,
    "l": 22.157
  },
  "oklch": {
    "l": 0.26838,
    "c": 0.11976,
    "h": 270
  },
  "luminance": 0.01739
}

Semantic roles & 50–950 ramp

primary

#121B5F

secondary

#978C36

accent

#D73DEB

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121B5F

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

Preview Lab → · Contrast checker → · Palette generator →