#121557#121557

#121557 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.8% C 0.116 H 272.3°. Best body text is #FFFFFF at 16.53:1 contrast (WCAG AA passes).

Color values

HEX	#121557
RGB	rgb(18, 21, 87)
HSL	hsl(237, 66%, 21%)
HSV	hsv(237, 79%, 34%)
CMYK	cmyk(79.3%, 75.9%, 0%, 65.9%)
CIE-LAB	lab(11.64, 24.16, -39.97)
CIE-LCH	lch(11.64, 46.71, 301.15°)
OKLab	oklab(24.83% 0.0046 -0.1156)
OKLCH	oklch(24.83% 0.116 272.3)
XYZ	xyz(2.2373, 1.3528, 9.1582)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121557 #575412

analogous

#123757 #121557 #311257

triadic

#121557 #571215 #155712

tetradic

#121557 #571237 #575412 #125731

square

#121557 #571237 #575412 #125731

split-complementary

#121557 #573112 #375712

monochromatic

#050619 #080924 #121557 #1C218A #272DBC

Accessibility & contrast

On white

16.53

#121557 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#121557 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121557

16.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121557	#FFFFFF	#000000	##FFFFFF
##121557	1.00	16.53	1.27	16.53
#FFFFFF	16.53	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002259

Deuteranopia (green-blind)

#001B56

Tritanopia (blue-blind)

#002734

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121557;
/* rgb */ color: rgb(18, 21, 87);
/* oklch */ color: oklch(24.8% 0.116 272.3);

Tailwind

colors: {
  custom: {
    50: '#5d5287',
    500: '#121557',
    950: '#000000',
  },
}

SCSS

$custom: #121557;
$custom-light: #5d5287;
$custom-dark: #000000;

JSON

{
  "hex": "#121557",
  "rgb": {
    "r": 18,
    "g": 21,
    "b": 87
  },
  "hsl": {
    "h": 237.391,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24831,
    "c": 0.11573,
    "h": 272.3
  },
  "luminance": 0.01353
}

Semantic roles & 50–950 ramp

primary

#121557

secondary

#908C35

accent

#E13FE9

background

#F5F4F8

surface

#E9E7F0

border

#C5C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #121557

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

Preview Lab → · Contrast checker → · Palette generator →