#121F5E#121F5E

#121F5E is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.5% C 0.113 H 268.6°. Best body text is #FFFFFF at 15.18:1 contrast (WCAG AA passes).

Color values

HEX	#121F5E
RGB	rgb(18, 31, 94)
HSL	hsl(230, 68%, 22%)
HSV	hsv(230, 81%, 37%)
CMYK	cmyk(80.9%, 67%, 0%, 63.1%)
CIE-LAB	lab(15.04, 19.86, -39.09)
CIE-LCH	lch(15.04, 43.85, 296.94°)
OKLab	oklab(27.53% -0.0027 -0.113)
OKLCH	oklch(27.53% 0.113 268.6)
XYZ	xyz(2.7591, 1.9164, 10.8120)
Luminance	0.0192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F5E #5E5112

analogous

#12455E #121F5E #2B125E

triadic

#121F5E #5E121F #1F5E12

tetradic

#121F5E #5E1245 #5E5112 #125E2B

square

#121F5E #5E1245 #5E5112 #125E2B

split-complementary

#121F5E #5E2B12 #455E12

monochromatic

#05081A #080E2B #121F5E #1C3091 #2641C5

Accessibility & contrast

On white

15.18

#121F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#121F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F5E

15.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F5E	#FFFFFF	#000000	##FFFFFF
##121F5E	1.00	15.18	1.38	15.18
#FFFFFF	15.18	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002960

Deuteranopia (green-blind)

#00225D

Tritanopia (blue-blind)

#002F3B

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #121f5e;
/* rgb */ color: rgb(18, 31, 94);
/* oklch */ color: oklch(27.5% 0.113 268.6);

Tailwind

colors: {
  custom: {
    50: '#5e5a8c',
    500: '#121f5e',
    950: '#000000',
  },
}

SCSS

$custom: #121f5e;
$custom-light: #5e5a8c;
$custom-dark: #000000;

JSON

{
  "hex": "#121f5e",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 94
  },
  "hsl": {
    "h": 229.737,
    "s": 67.857,
    "l": 21.961
  },
  "oklch": {
    "l": 0.27535,
    "c": 0.11304,
    "h": 268.6
  },
  "luminance": 0.01917
}

Semantic roles & 50–950 ramp

primary

#121F5E

secondary

#968635

accent

#CD3DEB

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121F5E

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

Preview Lab → · Contrast checker → · Palette generator →