#121F40#121F40

#121F40 is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 24.8% C 0.065 H 265.7°. Best body text is #FFFFFF at 16.21:1 contrast (WCAG AA passes).

Color values

HEX	#121F40
RGB	rgb(18, 31, 64)
HSL	hsl(223, 56%, 16%)
HSV	hsv(223, 72%, 25%)
CMYK	cmyk(71.9%, 51.6%, 0%, 74.9%)
CIE-LAB	lab(12.47, 7.12, -22.76)
CIE-LCH	lch(12.47, 23.84, 287.38°)
OKLab	oklab(24.79% -0.0049 -0.065)
OKLCH	oklch(24.79% 0.065 265.7)
XYZ	xyz(1.6645, 1.4786, 5.0472)
Luminance	0.0148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F40 #403312

analogous

#123640 #121F40 #1C1240

triadic

#121F40 #40121F #1F4012

tetradic

#121F40 #401236 #403312 #12401C

square

#121F40 #401236 #403312 #12401C

split-complementary

#121F40 #401C12 #364012

monochromatic

#070C18 #070C18 #121F40 #1F3670 #2D4DA0

Accessibility & contrast

On white

16.21

#121F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#121F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F40

16.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F40	#FFFFFF	#000000	##FFFFFF
##121F40	1.00	16.21	1.30	16.21
#FFFFFF	16.21	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F2341

Deuteranopia (green-blind)

#081E3F

Tritanopia (blue-blind)

#00272C

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121f40;
/* rgb */ color: rgb(18, 31, 64);
/* oklch */ color: oklch(24.8% 0.065 265.7);

Tailwind

colors: {
  custom: {
    50: '#565a75',
    500: '#121f40',
    950: '#000000',
  },
}

SCSS

$custom: #121f40;
$custom-light: #565a75;
$custom-dark: #000000;

JSON

{
  "hex": "#121f40",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 64
  },
  "hsl": {
    "h": 223.043,
    "s": 56.098,
    "l": 16.078
  },
  "oklch": {
    "l": 0.24792,
    "c": 0.06518,
    "h": 265.7
  },
  "luminance": 0.01479
}

Semantic roles & 50–950 ramp

primary

#121F40

secondary

#796635

accent

#B548DF

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #121F40

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

Preview Lab → · Contrast checker → · Palette generator →