#121B5D#121B5D

#121B5D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.117 H 270.0°. Best body text is #FFFFFF at 15.66:1 contrast (WCAG AA passes).

Color values

HEX	#121B5D
RGB	rgb(18, 27, 93)
HSL	hsl(233, 68%, 22%)
HSV	hsv(233, 81%, 36%)
CMYK	cmyk(80.6%, 71%, 0%, 63.5%)
CIE-LAB	lab(13.84, 22.35, -40.39)
CIE-LCH	lch(13.84, 46.16, 298.95°)
OKLab	oklab(26.62% 0.0001 -0.1168)
OKLCH	oklch(26.62% 0.117 270)
XYZ	xyz(2.6165, 1.7025, 10.5445)
Luminance	0.0170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B5D #5D5412

analogous

#12415D #121B5D #2F125D

triadic

#121B5D #5D121B #1B5D12

tetradic

#121B5D #5D1241 #5D5412 #125D2F

square

#121B5D #5D1241 #5D5412 #125D2F

split-complementary

#121B5D #5D2F12 #415D12

monochromatic

#05071A #080C2A #121B5D #1C2A90 #2639C4

Accessibility & contrast

On white

15.66

#121B5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#121B5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B5D

15.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B5D	#FFFFFF	#000000	##FFFFFF
##121B5D	1.00	15.66	1.34	15.66
#FFFFFF	15.66	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275F

Deuteranopia (green-blind)

#00205C

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #121b5d;
/* rgb */ color: rgb(18, 27, 93);
/* oklch */ color: oklch(26.6% 0.117 270.0);

Tailwind

colors: {
  custom: {
    50: '#5e578c',
    500: '#121b5d',
    950: '#000000',
  },
}

SCSS

$custom: #121b5d;
$custom-light: #5e578c;
$custom-dark: #000000;

JSON

{
  "hex": "#121b5d",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 93
  },
  "hsl": {
    "h": 232.8,
    "s": 67.568,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26622,
    "c": 0.11685,
    "h": 270
  },
  "luminance": 0.01703
}

Semantic roles & 50–950 ramp

primary

#121B5D

secondary

#958A35

accent

#D63DEA

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121B5D

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

Preview Lab → · Contrast checker → · Palette generator →