#121F5F#121F5F

#121F5F is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.6% C 0.115 H 268.6°. Best body text is #FFFFFF at 15.14:1 contrast (WCAG AA passes).

Color values

HEX	#121F5F
RGB	rgb(18, 31, 95)
HSL	hsl(230, 68%, 22%)
HSV	hsv(230, 81%, 37%)
CMYK	cmyk(81.1%, 67.4%, 0%, 62.7%)
CIE-LAB	lab(15.14, 20.28, -39.60)
CIE-LCH	lch(15.14, 44.49, 297.12°)
OKLab	oklab(27.64% -0.0028 -0.1145)
OKLCH	oklch(27.64% 0.115 268.6)
XYZ	xyz(2.8043, 1.9345, 11.0499)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F5F #5F5212

analogous

#12465F #121F5F #2C125F

triadic

#121F5F #5F121F #1F5F12

tetradic

#121F5F #5F1246 #5F5212 #125F2C

square

#121F5F #5F1246 #5F5212 #125F2C

split-complementary

#121F5F #5F2C12 #465F12

monochromatic

#05081A #080E2C #121F5F #1C3092 #2541C6

Accessibility & contrast

On white

15.14

#121F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#121F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F5F

15.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F5F	#FFFFFF	#000000	##FFFFFF
##121F5F	1.00	15.14	1.39	15.14
#FFFFFF	15.14	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A61

Deuteranopia (green-blind)

#00225E

Tritanopia (blue-blind)

#00303B

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #121f5f;
/* rgb */ color: rgb(18, 31, 95);
/* oklch */ color: oklch(27.6% 0.115 268.6);

Tailwind

colors: {
  custom: {
    50: '#5e5a8d',
    500: '#121f5f',
    950: '#000000',
  },
}

SCSS

$custom: #121f5f;
$custom-light: #5e5a8d;
$custom-dark: #000000;

JSON

{
  "hex": "#121f5f",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 95
  },
  "hsl": {
    "h": 229.87,
    "s": 68.142,
    "l": 22.157
  },
  "oklch": {
    "l": 0.27636,
    "c": 0.11453,
    "h": 268.6
  },
  "luminance": 0.01935
}

Semantic roles & 50–950 ramp

primary

#121F5F

secondary

#978736

accent

#CE3DEB

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121F5F

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

Preview Lab → · Contrast checker → · Palette generator →