#121757#121757

#121757 is a dark, moderate blue. Relative luminance 0.014; OKLCH L 25.2% C 0.113 H 271.7°. Best body text is #FFFFFF at 16.33:1 contrast (WCAG AA passes).

Color values

HEX	#121757
RGB	rgb(18, 23, 87)
HSL	hsl(236, 66%, 21%)
HSV	hsv(236, 79%, 34%)
CMYK	cmyk(79.3%, 73.6%, 0%, 65.9%)
CIE-LAB	lab(12.15, 22.77, -39.13)
CIE-LCH	lch(12.15, 45.27, 300.19°)
OKLab	oklab(25.2% 0.0033 -0.1132)
OKLCH	oklch(25.2% 0.113 271.7)
XYZ	xyz(2.2756, 1.4293, 9.1709)
Luminance	0.0143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121757 #575212

analogous

#123957 #121757 #2F1257

triadic

#121757 #571217 #175712

tetradic

#121757 #571239 #575212 #12572F

square

#121757 #571239 #575212 #12572F

split-complementary

#121757 #572F12 #395712

monochromatic

#050719 #080A24 #121757 #1C248A #2732BC

Accessibility & contrast

On white

16.33

#121757 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#121757 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121757

16.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121757	#FFFFFF	#000000	##FFFFFF
##121757	1.00	16.33	1.29	16.33
#FFFFFF	16.33	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002359

Deuteranopia (green-blind)

#001D56

Tritanopia (blue-blind)

#002834

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121757;
/* rgb */ color: rgb(18, 23, 87);
/* oklch */ color: oklch(25.2% 0.113 271.7);

Tailwind

colors: {
  custom: {
    50: '#5d5487',
    500: '#121757',
    950: '#000000',
  },
}

SCSS

$custom: #121757;
$custom-light: #5d5487;
$custom-dark: #000000;

JSON

{
  "hex": "#121757",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 87
  },
  "hsl": {
    "h": 235.652,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.252,
    "c": 0.11324,
    "h": 271.7
  },
  "luminance": 0.0143
}

Semantic roles & 50–950 ramp

primary

#121757

secondary

#908935

accent

#DC3FE9

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #121757

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

Preview Lab → · Contrast checker → · Palette generator →