#121F7F#121F7F

#121F7F is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.1% C 0.159 H 268.0°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#121F7F
RGB	rgb(18, 31, 127)
HSL	hsl(233, 75%, 28%)
HSV	hsv(233, 86%, 50%)
CMYK	cmyk(85.8%, 75.6%, 0%, 50.2%)
CIE-LAB	lab(18.54, 32.91, -54.78)
CIE-LCH	lch(18.54, 63.91, 301.00°)
OKLab	oklab(31.13% -0.0056 -0.1588)
OKLCH	oklch(31.13% 0.159 268)
XYZ	xyz(4.5689, 2.6403, 20.3434)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F7F #7F7212

analogous

#12557F #121F7F #3B127F

triadic

#121F7F #7F121F #1F7F12

tetradic

#121F7F #7F1255 #7F7212 #127F3B

square

#121F7F #7F1255 #7F7212 #127F3B

split-complementary

#121F7F #7F3B12 #557F12

monochromatic

#04071B #0A1249 #121F7F #1A2CB5 #2B40E1

Accessibility & contrast

On white

13.74

#121F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#121F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F7F

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F7F	#FFFFFF	#000000	##FFFFFF
##121F7F	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003382

Deuteranopia (green-blind)

#00287D

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #121f7f;
/* rgb */ color: rgb(18, 31, 127);
/* oklch */ color: oklch(31.1% 0.159 268.0);

Tailwind

colors: {
  custom: {
    50: '#675ba5',
    500: '#121f7f',
    950: '#000000',
  },
}

SCSS

$custom: #121f7f;
$custom-light: #675ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#121f7f",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 127
  },
  "hsl": {
    "h": 232.844,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31132,
    "c": 0.15888,
    "h": 268
  },
  "luminance": 0.02641
}

Semantic roles & 50–950 ramp

primary

#121F7F

secondary

#B5A638

accent

#DB36F2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #121F7F

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

Preview Lab → · Contrast checker → · Palette generator →