#121C57#121C57

#121C57 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.107 H 269.8°. Best body text is #FFFFFF at 15.80:1 contrast (WCAG AA passes).

Color values

HEX	#121C57
RGB	rgb(18, 28, 87)
HSL	hsl(231, 66%, 21%)
HSV	hsv(231, 79%, 34%)
CMYK	cmyk(79.3%, 67.8%, 0%, 65.9%)
CIE-LAB	lab(13.51, 19.16, -36.90)
CIE-LCH	lch(13.51, 41.58, 297.44°)
OKLab	oklab(26.2% -0.0003 -0.1066)
OKLCH	oklch(26.2% 0.107 269.8)
XYZ	xyz(2.3844, 1.6470, 9.2072)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C57 #574D12

analogous

#123E57 #121C57 #2A1257

triadic

#121C57 #57121C #1C5712

tetradic

#121C57 #57123E #574D12 #12572A

square

#121C57 #57123E #574D12 #12572A

split-complementary

#121C57 #572A12 #3E5712

monochromatic

#050819 #080C24 #121C57 #1C2C8A #273DBC

Accessibility & contrast

On white

15.80

#121C57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#121C57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C57

15.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C57	#FFFFFF	#000000	##FFFFFF
##121C57	1.00	15.80	1.33	15.80
#FFFFFF	15.80	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002659

Deuteranopia (green-blind)

#001F56

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #121c57;
/* rgb */ color: rgb(18, 28, 87);
/* oklch */ color: oklch(26.2% 0.107 269.8);

Tailwind

colors: {
  custom: {
    50: '#5c5887',
    500: '#121c57',
    950: '#000000',
  },
}

SCSS

$custom: #121c57;
$custom-light: #5c5887;
$custom-dark: #000000;

JSON

{
  "hex": "#121c57",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 87
  },
  "hsl": {
    "h": 231.304,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26196,
    "c": 0.10662,
    "h": 269.8
  },
  "luminance": 0.01647
}

Semantic roles & 50–950 ramp

primary

#121C57

secondary

#908335

accent

#D03FE9

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #121C57

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

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