#121C4B#121C4B

#121C4B is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.0% C 0.088 H 269.8°. Best body text is #FFFFFF at 16.24:1 contrast (WCAG AA passes).

Color values

HEX	#121C4B
RGB	rgb(18, 28, 75)
HSL	hsl(229, 61%, 18%)
HSV	hsv(229, 76%, 29%)
CMYK	cmyk(76%, 62.7%, 0%, 70.6%)
CIE-LAB	lab(12.40, 14.11, -30.53)
CIE-LCH	lch(12.40, 33.64, 294.81°)
OKLab	oklab(25.02% -0.0003 -0.0879)
OKLCH	oklch(25.02% 0.088 269.8)
XYZ	xyz(1.9343, 1.4669, 6.8365)
Luminance	0.0147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.31

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C4B #4B4112

analogous

#12384B #121C4B #24124B

triadic

#121C4B #4B121C #1C4B12

tetradic

#121C4B #4B1238 #4B4112 #124B24

square

#121C4B #4B1238 #4B4112 #124B24

split-complementary

#121C4B #4B2412 #384B12

monochromatic

#060919 #060A1A #121C4B #1E2E7C #2A41AE

Accessibility & contrast

On white

16.24

#121C4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#121C4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C4B

16.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C4B	#FFFFFF	#000000	##FFFFFF
##121C4B	1.00	16.24	1.29	16.24
#FFFFFF	16.24	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234D

Deuteranopia (green-blind)

#001E4A

Tritanopia (blue-blind)

#002730

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121c4b;
/* rgb */ color: rgb(18, 28, 75);
/* oklch */ color: oklch(25.0% 0.088 269.8);

Tailwind

colors: {
  custom: {
    50: '#59577e',
    500: '#121c4b',
    950: '#000000',
  },
}

SCSS

$custom: #121c4b;
$custom-light: #59577e;
$custom-dark: #000000;

JSON

{
  "hex": "#121c4b",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 75
  },
  "hsl": {
    "h": 229.474,
    "s": 61.29,
    "l": 18.235
  },
  "oklch": {
    "l": 0.25018,
    "c": 0.08792,
    "h": 269.8
  },
  "luminance": 0.01467
}

Semantic roles & 50–950 ramp

primary

#121C4B

secondary

#847635

accent

#C843E4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #121C4B

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

Preview Lab → · Contrast checker → · Palette generator →