#121B52#121B52

#121B52 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.100 H 270.4°. Best body text is #FFFFFF at 16.10:1 contrast (WCAG AA passes).

Color values

HEX	#121B52
RGB	rgb(18, 27, 82)
HSL	hsl(232, 64%, 20%)
HSV	hsv(232, 78%, 32%)
CMYK	cmyk(78%, 67.1%, 0%, 67.8%)
CIE-LAB	lab(12.74, 17.82, -34.77)
CIE-LCH	lch(12.74, 39.07, 297.13°)
OKLab	oklab(25.48% 0.0007 -0.1004)
OKLCH	oklch(25.48% 0.1 270.4)
XYZ	xyz(2.1639, 1.5214, 8.1606)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.56

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B52 #524912

analogous

#123B52 #121B52 #291252

triadic

#121B52 #52121B #1B5212

tetradic

#121B52 #52123B #524912 #125229

square

#121B52 #52123B #524912 #125229

split-complementary

#121B52 #522912 #3B5212

monochromatic

#060819 #070A20 #121B52 #1D2C84 #283CB6

Accessibility & contrast

On white

16.10

#121B52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#121B52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B52

16.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B52	#FFFFFF	#000000	##FFFFFF
##121B52	1.00	16.10	1.30	16.10
#FFFFFF	16.10	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002454

Deuteranopia (green-blind)

#001E51

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #121b52;
/* rgb */ color: rgb(18, 27, 82);
/* oklch */ color: oklch(25.5% 0.100 270.4);

Tailwind

colors: {
  custom: {
    50: '#5b5783',
    500: '#121b52',
    950: '#000000',
  },
}

SCSS

$custom: #121b52;
$custom-light: #5b5783;
$custom-dark: #000000;

JSON

{
  "hex": "#121b52",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 82
  },
  "hsl": {
    "h": 231.563,
    "s": 64,
    "l": 19.608
  },
  "oklch": {
    "l": 0.25478,
    "c": 0.10037,
    "h": 270.4
  },
  "luminance": 0.01522
}

Semantic roles & 50–950 ramp

primary

#121B52

secondary

#8B7F35

accent

#D041E7

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #121B52

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

Preview Lab → · Contrast checker → · Palette generator →