#121F57#121F57

#121F57 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.8% C 0.102 H 268.5°. Best body text is #FFFFFF at 15.45:1 contrast (WCAG AA passes).

Color values

HEX	#121F57
RGB	rgb(18, 31, 87)
HSL	hsl(229, 66%, 21%)
HSV	hsv(229, 79%, 34%)
CMYK	cmyk(79.3%, 64.4%, 0%, 65.9%)
CIE-LAB	lab(14.38, 16.93, -35.48)
CIE-LCH	lch(14.38, 39.32, 295.51°)
OKLab	oklab(26.84% -0.0027 -0.1024)
OKLCH	oklch(26.84% 0.102 268.5)
XYZ	xyz(2.4591, 1.7964, 9.2321)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F57 #574A12

analogous

#124157 #121F57 #281257

triadic

#121F57 #57121F #1F5712

tetradic

#121F57 #571241 #574A12 #125728

square

#121F57 #571241 #574A12 #125728

split-complementary

#121F57 #572812 #415712

monochromatic

#050919 #080D24 #121F57 #1C318A #2743BC

Accessibility & contrast

On white

15.45

#121F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#121F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F57

15.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F57	#FFFFFF	#000000	##FFFFFF
##121F57	1.00	15.45	1.36	15.45
#FFFFFF	15.45	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002859

Deuteranopia (green-blind)

#002156

Tritanopia (blue-blind)

#002D37

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #121f57;
/* rgb */ color: rgb(18, 31, 87);
/* oklch */ color: oklch(26.8% 0.102 268.5);

Tailwind

colors: {
  custom: {
    50: '#5c5a87',
    500: '#121f57',
    950: '#000000',
  },
}

SCSS

$custom: #121f57;
$custom-light: #5c5a87;
$custom-dark: #000000;

JSON

{
  "hex": "#121f57",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 87
  },
  "hsl": {
    "h": 228.696,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26839,
    "c": 0.10246,
    "h": 268.5
  },
  "luminance": 0.01797
}

Semantic roles & 50–950 ramp

primary

#121F57

secondary

#907F35

accent

#C93FE9

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #121F57

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

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