#121D5C#121D5C

#121D5C is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.113 H 269.4°. Best body text is #FFFFFF at 15.49:1 contrast (WCAG AA passes).

Color values

HEX	#121D5C
RGB	rgb(18, 29, 92)
HSL	hsl(231, 67%, 22%)
HSV	hsv(231, 80%, 36%)
CMYK	cmyk(80.4%, 68.5%, 0%, 63.9%)
CIE-LAB	lab(14.29, 20.49, -39.00)
CIE-LCH	lch(14.29, 44.05, 297.72°)
OKLab	oklab(26.92% -0.0012 -0.1127)
OKLCH	oklch(26.92% 0.113 269.4)
XYZ	xyz(2.6199, 1.7798, 10.3286)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D5C #5C5112

analogous

#12425C #121D5C #2C125C

triadic

#121D5C #5C121D #1D5C12

tetradic

#121D5C #5C1242 #5C5112 #125C2C

square

#121D5C #5C1242 #5C5112 #125C2C

split-complementary

#121D5C #5C2C12 #425C12

monochromatic

#05081A #080D29 #121D5C #1C2D8F #263DC2

Accessibility & contrast

On white

15.49

#121D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#121D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D5C

15.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D5C	#FFFFFF	#000000	##FFFFFF
##121D5C	1.00	15.49	1.36	15.49
#FFFFFF	15.49	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285E

Deuteranopia (green-blind)

#00215B

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #121d5c;
/* rgb */ color: rgb(18, 29, 92);
/* oklch */ color: oklch(26.9% 0.113 269.4);

Tailwind

colors: {
  custom: {
    50: '#5d588b',
    500: '#121d5c',
    950: '#000000',
  },
}

SCSS

$custom: #121d5c;
$custom-light: #5d588b;
$custom-dark: #000000;

JSON

{
  "hex": "#121d5c",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 92
  },
  "hsl": {
    "h": 231.081,
    "s": 67.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.26917,
    "c": 0.11276,
    "h": 269.4
  },
  "luminance": 0.0178
}

Semantic roles & 50–950 ramp

primary

#121D5C

secondary

#948635

accent

#D13EEA

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121D5C

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

Preview Lab → · Contrast checker → · Palette generator →