#121F5D#121F5D

#121F5D is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.112 H 268.6°. Best body text is #FFFFFF at 15.22:1 contrast (WCAG AA passes).

Color values

HEX	#121F5D
RGB	rgb(18, 31, 93)
HSL	hsl(230, 68%, 22%)
HSV	hsv(230, 81%, 36%)
CMYK	cmyk(80.6%, 66.7%, 0%, 63.5%)
CIE-LAB	lab(14.95, 19.45, -38.58)
CIE-LCH	lch(14.95, 43.21, 296.75°)
OKLab	oklab(27.43% -0.0027 -0.1115)
OKLCH	oklch(27.43% 0.112 268.6)
XYZ	xyz(2.7145, 1.8986, 10.5772)
Luminance	0.0190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F5D #5D5012

analogous

#12455D #121F5D #2B125D

triadic

#121F5D #5D121F #1F5D12

tetradic

#121F5D #5D1245 #5D5012 #125D2B

square

#121F5D #5D1245 #5D5012 #125D2B

split-complementary

#121F5D #5D2B12 #455D12

monochromatic

#05091A #080E2A #121F5D #1C3090 #2641C4

Accessibility & contrast

On white

15.22

#121F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#121F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F5D

15.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F5D	#FFFFFF	#000000	##FFFFFF
##121F5D	1.00	15.22	1.38	15.22
#FFFFFF	15.22	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295F

Deuteranopia (green-blind)

#00225C

Tritanopia (blue-blind)

#002F3A

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #121f5d;
/* rgb */ color: rgb(18, 31, 93);
/* oklch */ color: oklch(27.4% 0.112 268.6);

Tailwind

colors: {
  custom: {
    50: '#5d5a8c',
    500: '#121f5d',
    950: '#000000',
  },
}

SCSS

$custom: #121f5d;
$custom-light: #5d5a8c;
$custom-dark: #000000;

JSON

{
  "hex": "#121f5d",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 93
  },
  "hsl": {
    "h": 229.6,
    "s": 67.568,
    "l": 21.765
  },
  "oklch": {
    "l": 0.27434,
    "c": 0.11155,
    "h": 268.6
  },
  "luminance": 0.01899
}

Semantic roles & 50–950 ramp

primary

#121F5D

secondary

#958535

accent

#CC3DEA

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121F5D

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

Preview Lab → · Contrast checker → · Palette generator →