#121B4D#121B4D

#121B4D is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 25.0% C 0.093 H 270.4°. Best body text is #FFFFFF at 16.28:1 contrast (WCAG AA passes).

Color values

HEX	#121B4D
RGB	rgb(18, 27, 77)
HSL	hsl(231, 62%, 19%)
HSV	hsv(231, 77%, 30%)
CMYK	cmyk(76.6%, 64.9%, 0%, 69.8%)
CIE-LAB	lab(12.27, 15.72, -32.11)
CIE-LCH	lch(12.27, 35.75, 296.08°)
OKLab	oklab(24.98% 0.0007 -0.0926)
OKLCH	oklch(24.98% 0.093 270.4)
XYZ	xyz(1.9805, 1.4481, 7.1949)
Luminance	0.0145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B4D #4D4412

analogous

#12384D #121B4D #26124D

triadic

#121B4D #4D121B #1B4D12

tetradic

#121B4D #4D1238 #4D4412 #124D26

square

#121B4D #4D1238 #4D4412 #124D26

split-complementary

#121B4D #4D2612 #384D12

monochromatic

#060919 #060A1B #121B4D #1E2C7F #293EB0

Accessibility & contrast

On white

16.28

#121B4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#121B4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B4D

16.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B4D	#FFFFFF	#000000	##FFFFFF
##121B4D	1.00	16.28	1.29	16.28
#FFFFFF	16.28	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234F

Deuteranopia (green-blind)

#001D4C

Tritanopia (blue-blind)

#002731

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121b4d;
/* rgb */ color: rgb(18, 27, 77);
/* oklch */ color: oklch(25.0% 0.093 270.4);

Tailwind

colors: {
  custom: {
    50: '#59577f',
    500: '#121b4d',
    950: '#000000',
  },
}

SCSS

$custom: #121b4d;
$custom-light: #59577f;
$custom-dark: #000000;

JSON

{
  "hex": "#121b4d",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 77
  },
  "hsl": {
    "h": 230.847,
    "s": 62.105,
    "l": 18.627
  },
  "oklch": {
    "l": 0.24984,
    "c": 0.09257,
    "h": 270.4
  },
  "luminance": 0.01448
}

Semantic roles & 50–950 ramp

primary

#121B4D

secondary

#867A35

accent

#CC43E5

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #121B4D

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

Preview Lab → · Contrast checker → · Palette generator →