#121B53#121B53

#121B53 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.6% C 0.102 H 270.4°. Best body text is #FFFFFF at 16.06:1 contrast (WCAG AA passes).

Color values

HEX	#121B53
RGB	rgb(18, 27, 83)
HSL	hsl(232, 64%, 20%)
HSV	hsv(232, 78%, 33%)
CMYK	cmyk(78.3%, 67.5%, 0%, 67.5%)
CIE-LAB	lab(12.84, 18.23, -35.29)
CIE-LCH	lch(12.84, 39.72, 297.32°)
OKLab	oklab(25.58% 0.0006 -0.1019)
OKLCH	oklch(25.58% 0.102 270.4)
XYZ	xyz(2.2022, 1.5368, 8.3625)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B53 #534A12

analogous

#123C53 #121B53 #291253

triadic

#121B53 #53121B #1B5312

tetradic

#121B53 #53123C #534A12 #125329

square

#121B53 #53123C #534A12 #125329

split-complementary

#121B53 #532912 #3C5312

monochromatic

#050819 #070B21 #121B53 #1D2B85 #283CB8

Accessibility & contrast

On white

16.06

#121B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#121B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B53

16.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B53	#FFFFFF	#000000	##FFFFFF
##121B53	1.00	16.06	1.31	16.06
#FFFFFF	16.06	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002455

Deuteranopia (green-blind)

#001E52

Tritanopia (blue-blind)

#002934

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #121b53;
/* rgb */ color: rgb(18, 27, 83);
/* oklch */ color: oklch(25.6% 0.102 270.4);

Tailwind

colors: {
  custom: {
    50: '#5b5784',
    500: '#121b53',
    950: '#000000',
  },
}

SCSS

$custom: #121b53;
$custom-light: #5b5784;
$custom-dark: #000000;

JSON

{
  "hex": "#121b53",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 83
  },
  "hsl": {
    "h": 231.692,
    "s": 64.356,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25579,
    "c": 0.10191,
    "h": 270.4
  },
  "luminance": 0.01537
}

Semantic roles & 50–950 ramp

primary

#121B53

secondary

#8C8035

accent

#D040E7

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #121B53

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

Preview Lab → · Contrast checker → · Palette generator →