#121D4B#121D4B

#121D4B is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.086 H 269.2°. Best body text is #FFFFFF at 16.12:1 contrast (WCAG AA passes).

Color values

HEX	#121D4B
RGB	rgb(18, 29, 75)
HSL	hsl(228, 61%, 18%)
HSV	hsv(228, 76%, 29%)
CMYK	cmyk(76%, 61.3%, 0%, 70.6%)
CIE-LAB	lab(12.70, 13.35, -30.03)
CIE-LCH	lch(12.70, 32.87, 293.97°)
OKLab	oklab(25.25% -0.0013 -0.0864)
OKLCH	oklch(25.25% 0.086 269.2)
XYZ	xyz(1.9584, 1.5151, 6.8445)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.60

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D4B #4B4012

analogous

#12394B #121D4B #23124B

triadic

#121D4B #4B121D #1D4B12

tetradic

#121D4B #4B1239 #4B4012 #124B23

square

#121D4B #4B1239 #4B4012 #124B23

split-complementary

#121D4B #4B2312 #394B12

monochromatic

#060A19 #060A1A #121D4B #1E307C #2A43AE

Accessibility & contrast

On white

16.12

#121D4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#121D4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D4B

16.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D4B	#FFFFFF	#000000	##FFFFFF
##121D4B	1.00	16.12	1.30	16.12
#FFFFFF	16.12	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244D

Deuteranopia (green-blind)

#001E4A

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #121d4b;
/* rgb */ color: rgb(18, 29, 75);
/* oklch */ color: oklch(25.2% 0.086 269.2);

Tailwind

colors: {
  custom: {
    50: '#58587e',
    500: '#121d4b',
    950: '#000000',
  },
}

SCSS

$custom: #121d4b;
$custom-light: #58587e;
$custom-dark: #000000;

JSON

{
  "hex": "#121d4b",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 75
  },
  "hsl": {
    "h": 228.421,
    "s": 61.29,
    "l": 18.235
  },
  "oklch": {
    "l": 0.25249,
    "c": 0.08645,
    "h": 269.2
  },
  "luminance": 0.01515
}

Semantic roles & 50–950 ramp

primary

#121D4B

secondary

#847535

accent

#C543E4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #121D4B

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

Preview Lab → · Contrast checker → · Palette generator →