#121E5B#121E5B

#121E5B is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.0% C 0.110 H 269.0°. Best body text is #FFFFFF at 15.41:1 contrast (WCAG AA passes).

Color values

HEX	#121E5B
RGB	rgb(18, 30, 91)
HSL	hsl(230, 67%, 21%)
HSV	hsv(230, 80%, 36%)
CMYK	cmyk(80.2%, 67%, 0%, 64.3%)
CIE-LAB	lab(14.47, 19.35, -38.03)
CIE-LCH	lch(14.47, 42.67, 296.97°)
OKLab	oklab(27.02% -0.0019 -0.1099)
OKLCH	oklch(27.02% 0.11 269)
XYZ	xyz(2.6014, 1.8122, 10.1082)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121E5B #5B4F12

analogous

#12435B #121E5B #2B125B

triadic

#121E5B #5B121E #1E5B12

tetradic

#121E5B #5B1243 #5B4F12 #125B2B

square

#121E5B #5B1243 #5B4F12 #125B2B

split-complementary

#121E5B #5B2B12 #435B12

monochromatic

#05081A #080D28 #121E5B #1C2F8E #2640C1

Accessibility & contrast

On white

15.41

#121E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#121E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121E5B

15.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121E5B	#FFFFFF	#000000	##FFFFFF
##121E5B	1.00	15.41	1.36	15.41
#FFFFFF	15.41	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285D

Deuteranopia (green-blind)

#00215A

Tritanopia (blue-blind)

#002E39

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #121e5b;
/* rgb */ color: rgb(18, 30, 91);
/* oklch */ color: oklch(27.0% 0.110 269.0);

Tailwind

colors: {
  custom: {
    50: '#5d598a',
    500: '#121e5b',
    950: '#000000',
  },
}

SCSS

$custom: #121e5b;
$custom-light: #5d598a;
$custom-dark: #000000;

JSON

{
  "hex": "#121e5b",
  "rgb": {
    "r": 18,
    "g": 30,
    "b": 91
  },
  "hsl": {
    "h": 230.137,
    "s": 66.972,
    "l": 21.373
  },
  "oklch": {
    "l": 0.27022,
    "c": 0.10992,
    "h": 269
  },
  "luminance": 0.01812
}

Semantic roles & 50–950 ramp

primary

#121E5B

secondary

#938435

accent

#CE3EEA

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121E5B

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

Preview Lab → · Contrast checker → · Palette generator →