#121B43#121B43

#121B43 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.1% C 0.076 H 270.2°. Best body text is #FFFFFF at 16.62:1 contrast (WCAG AA passes).

Color values

HEX	#121B43
RGB	rgb(18, 27, 67)
HSL	hsl(229, 58%, 17%)
HSV	hsv(229, 73%, 26%)
CMYK	cmyk(73.1%, 59.7%, 0%, 73.7%)
CIE-LAB	lab(11.40, 11.48, -26.59)
CIE-LCH	lch(11.40, 28.96, 293.35°)
OKLab	oklab(24.05% 0.0002 -0.0763)
OKLCH	oklch(24.05% 0.076 270.2)
XYZ	xyz(1.6542, 1.3176, 5.4762)
Luminance	0.0132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B43 #433A12

analogous

#123443 #121B43 #221243

triadic

#121B43 #43121B #1B4312

tetradic

#121B43 #431234 #433A12 #124322

square

#121B43 #431234 #433A12 #124322

split-complementary

#121B43 #432212 #344312

monochromatic

#060A18 #060A18 #121B43 #1F2E73 #2C42A3

Accessibility & contrast

On white

16.62

#121B43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#121B43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B43

16.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B43	#FFFFFF	#000000	##FFFFFF
##121B43	1.00	16.62	1.26	16.62
#FFFFFF	16.62	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#032144

Deuteranopia (green-blind)

#001C42

Tritanopia (blue-blind)

#00242B

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #121b43;
/* rgb */ color: rgb(18, 27, 67);
/* oklch */ color: oklch(24.1% 0.076 270.2);

Tailwind

colors: {
  custom: {
    50: '#575677',
    500: '#121b43',
    950: '#000000',
  },
}

SCSS

$custom: #121b43;
$custom-light: #575677;
$custom-dark: #000000;

JSON

{
  "hex": "#121b43",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 67
  },
  "hsl": {
    "h": 228.98,
    "s": 57.647,
    "l": 16.667
  },
  "oklch": {
    "l": 0.24051,
    "c": 0.07633,
    "h": 270.2
  },
  "luminance": 0.01318
}

Semantic roles & 50–950 ramp

primary

#121B43

secondary

#7C6F35

accent

#C547E1

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030309

muted

#78787B

Preview Lab

Preview with #121B43

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

Preview Lab → · Contrast checker → · Palette generator →