#121D5F#121D5F

#121D5F is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.2% C 0.117 H 269.3°. Best body text is #FFFFFF at 15.36:1 contrast (WCAG AA passes).

Color values

HEX	#121D5F
RGB	rgb(18, 29, 95)
HSL	hsl(231, 68%, 22%)
HSV	hsv(231, 81%, 37%)
CMYK	cmyk(81.1%, 69.5%, 0%, 62.7%)
CIE-LAB	lab(14.59, 21.73, -40.51)
CIE-LCH	lch(14.59, 45.96, 298.21°)
OKLab	oklab(27.23% -0.0014 -0.1172)
OKLCH	oklch(27.23% 0.117 269.3)
XYZ	xyz(2.7537, 1.8333, 11.0330)
Luminance	0.0183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D5F #5F5412

analogous

#12435F #121D5F #2E125F

triadic

#121D5F #5F121D #1D5F12

tetradic

#121D5F #5F1243 #5F5412 #125F2E

square

#121D5F #5F1243 #5F5412 #125F2E

split-complementary

#121D5F #5F2E12 #435F12

monochromatic

#05081A #080D2C #121D5F #1C2D92 #253CC6

Accessibility & contrast

On white

15.36

#121D5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#121D5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D5F

15.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D5F	#FFFFFF	#000000	##FFFFFF
##121D5F	1.00	15.36	1.37	15.36
#FFFFFF	15.36	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002961

Deuteranopia (green-blind)

#00215E

Tritanopia (blue-blind)

#002E3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #121d5f;
/* rgb */ color: rgb(18, 29, 95);
/* oklch */ color: oklch(27.2% 0.117 269.3);

Tailwind

colors: {
  custom: {
    50: '#5e598d',
    500: '#121d5f',
    950: '#000000',
  },
}

SCSS

$custom: #121d5f;
$custom-light: #5e598d;
$custom-dark: #000000;

JSON

{
  "hex": "#121d5f",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 95
  },
  "hsl": {
    "h": 231.429,
    "s": 68.142,
    "l": 22.157
  },
  "oklch": {
    "l": 0.2723,
    "c": 0.11718,
    "h": 269.3
  },
  "luminance": 0.01834
}

Semantic roles & 50–950 ramp

primary

#121D5F

secondary

#978936

accent

#D23DEB

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121D5F

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

Preview Lab → · Contrast checker → · Palette generator →