#121E57#121E57

#121E57 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.104 H 269.0°. Best body text is #FFFFFF at 15.57:1 contrast (WCAG AA passes).

Color values

HEX	#121E57
RGB	rgb(18, 30, 87)
HSL	hsl(230, 66%, 21%)
HSV	hsv(230, 79%, 34%)
CMYK	cmyk(79.3%, 65.5%, 0%, 65.9%)
CIE-LAB	lab(14.09, 17.68, -35.96)
CIE-LCH	lch(14.09, 40.07, 296.18°)
OKLab	oklab(26.62% -0.0019 -0.1038)
OKLCH	oklch(26.62% 0.104 269)
XYZ	xyz(2.4334, 1.7450, 9.2235)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121E57 #574B12

analogous

#124057 #121E57 #281257

triadic

#121E57 #57121E #1E5712

tetradic

#121E57 #571240 #574B12 #125728

square

#121E57 #571240 #574B12 #125728

split-complementary

#121E57 #572812 #405712

monochromatic

#050919 #080D24 #121E57 #1C2F8A #2741BC

Accessibility & contrast

On white

15.57

#121E57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#121E57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121E57

15.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121E57	#FFFFFF	#000000	##FFFFFF
##121E57	1.00	15.57	1.35	15.57
#FFFFFF	15.57	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002759

Deuteranopia (green-blind)

#002156

Tritanopia (blue-blind)

#002C37

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #121e57;
/* rgb */ color: rgb(18, 30, 87);
/* oklch */ color: oklch(26.6% 0.104 269.0);

Tailwind

colors: {
  custom: {
    50: '#5c5987',
    500: '#121e57',
    950: '#000000',
  },
}

SCSS

$custom: #121e57;
$custom-light: #5c5987;
$custom-dark: #000000;

JSON

{
  "hex": "#121e57",
  "rgb": {
    "r": 18,
    "g": 30,
    "b": 87
  },
  "hsl": {
    "h": 229.565,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26621,
    "c": 0.10386,
    "h": 269
  },
  "luminance": 0.01745
}

Semantic roles & 50–950 ramp

primary

#121E57

secondary

#908035

accent

#CB3FE9

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #121E57

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

Preview Lab → · Contrast checker → · Palette generator →