#121F58#121F58

#121F58 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.104 H 268.5°. Best body text is #FFFFFF at 15.41:1 contrast (WCAG AA passes).

Color values

HEX	#121F58
RGB	rgb(18, 31, 88)
HSL	hsl(229, 66%, 21%)
HSV	hsv(229, 80%, 35%)
CMYK	cmyk(79.5%, 64.8%, 0%, 65.5%)
CIE-LAB	lab(14.47, 17.35, -36.01)
CIE-LCH	lch(14.47, 39.97, 295.73°)
OKLab	oklab(26.94% -0.0027 -0.104)
OKLCH	oklch(26.94% 0.104 268.5)
XYZ	xyz(2.5003, 1.8129, 9.4488)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F58 #584B12

analogous

#124258 #121F58 #281258

triadic

#121F58 #58121F #1F5812

tetradic

#121F58 #581242 #584B12 #125828

square

#121F58 #581242 #584B12 #125828

split-complementary

#121F58 #582812 #425812

monochromatic

#050919 #080D25 #121F58 #1C318B #2743BE

Accessibility & contrast

On white

15.41

#121F58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#121F58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F58

15.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F58	#FFFFFF	#000000	##FFFFFF
##121F58	1.00	15.41	1.36	15.41
#FFFFFF	15.41	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285A

Deuteranopia (green-blind)

#002157

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #121f58;
/* rgb */ color: rgb(18, 31, 88);
/* oklch */ color: oklch(26.9% 0.104 268.5);

Tailwind

colors: {
  custom: {
    50: '#5c5a88',
    500: '#121f58',
    950: '#000000',
  },
}

SCSS

$custom: #121f58;
$custom-light: #5c5a88;
$custom-dark: #000000;

JSON

{
  "hex": "#121f58",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 88
  },
  "hsl": {
    "h": 228.857,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26936,
    "c": 0.10399,
    "h": 268.5
  },
  "luminance": 0.01813
}

Semantic roles & 50–950 ramp

primary

#121F58

secondary

#918035

accent

#C93FE9

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #121F58

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

Preview Lab → · Contrast checker → · Palette generator →