#121B5E#121B5E

#121B5E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.118 H 270.0°. Best body text is #FFFFFF at 15.62:1 contrast (WCAG AA passes).

Color values

HEX	#121B5E
RGB	rgb(18, 27, 94)
HSL	hsl(233, 68%, 22%)
HSV	hsv(233, 81%, 37%)
CMYK	cmyk(80.9%, 71.3%, 0%, 63.1%)
CIE-LAB	lab(13.95, 22.75, -40.89)
CIE-LCH	lch(13.95, 46.79, 299.09°)
OKLab	oklab(26.73% 0 -0.1183)
OKLCH	oklch(26.73% 0.118 270)
XYZ	xyz(2.6611, 1.7203, 10.7793)
Luminance	0.0172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B5E #5E5512

analogous

#12415E #121B5E #2F125E

triadic

#121B5E #5E121B #1B5E12

tetradic

#121B5E #5E1241 #5E5512 #125E2F

square

#121B5E #5E1241 #5E5512 #125E2F

split-complementary

#121B5E #5E2F12 #415E12

monochromatic

#05071A #080C2B #121B5E #1C2A91 #2639C5

Accessibility & contrast

On white

15.62

#121B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#121B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B5E

15.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B5E	#FFFFFF	#000000	##FFFFFF
##121B5E	1.00	15.62	1.34	15.62
#FFFFFF	15.62	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002760

Deuteranopia (green-blind)

#00205D

Tritanopia (blue-blind)

#002D3A

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #121b5e;
/* rgb */ color: rgb(18, 27, 94);
/* oklch */ color: oklch(26.7% 0.118 270.0);

Tailwind

colors: {
  custom: {
    50: '#5e578c',
    500: '#121b5e',
    950: '#000000',
  },
}

SCSS

$custom: #121b5e;
$custom-light: #5e578c;
$custom-dark: #000000;

JSON

{
  "hex": "#121b5e",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 94
  },
  "hsl": {
    "h": 232.895,
    "s": 67.857,
    "l": 21.961
  },
  "oklch": {
    "l": 0.2673,
    "c": 0.11831,
    "h": 270
  },
  "luminance": 0.01721
}

Semantic roles & 50–950 ramp

primary

#121B5E

secondary

#968B35

accent

#D63DEB

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121B5E

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

Preview Lab → · Contrast checker → · Palette generator →