#121B58#121B58

#121B58 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.1% C 0.109 H 270.2°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#121B58
RGB	rgb(18, 27, 88)
HSL	hsl(232, 66%, 21%)
HSV	hsv(232, 80%, 35%)
CMYK	cmyk(79.5%, 69.3%, 0%, 65.5%)
CIE-LAB	lab(13.33, 20.30, -37.87)
CIE-LCH	lch(13.33, 42.97, 298.19°)
OKLab	oklab(26.09% 0.0004 -0.1095)
OKLCH	oklch(26.09% 0.109 270.2)
XYZ	xyz(2.4022, 1.6168, 9.4161)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B58 #584F12

analogous

#123E58 #121B58 #2C1258

triadic

#121B58 #58121B #1B5812

tetradic

#121B58 #58123E #584F12 #12582C

square

#121B58 #58123E #584F12 #12582C

split-complementary

#121B58 #582C12 #3E5812

monochromatic

#050819 #080B25 #121B58 #1C2B8B #273ABE

Accessibility & contrast

On white

15.87

#121B58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#121B58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B58

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B58	#FFFFFF	#000000	##FFFFFF
##121B58	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265A

Deuteranopia (green-blind)

#001F57

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #121b58;
/* rgb */ color: rgb(18, 27, 88);
/* oklch */ color: oklch(26.1% 0.109 270.2);

Tailwind

colors: {
  custom: {
    50: '#5c5788',
    500: '#121b58',
    950: '#000000',
  },
}

SCSS

$custom: #121b58;
$custom-light: #5c5788;
$custom-dark: #000000;

JSON

{
  "hex": "#121b58",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 88
  },
  "hsl": {
    "h": 232.286,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26093,
    "c": 0.10947,
    "h": 270.2
  },
  "luminance": 0.01617
}

Semantic roles & 50–950 ramp

primary

#121B58

secondary

#918535

accent

#D33FE9

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #121B58

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

Preview Lab → · Contrast checker → · Palette generator →