#121F5C#121F5C

#121F5C is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.3% C 0.110 H 268.6°. Best body text is #FFFFFF at 15.26:1 contrast (WCAG AA passes).

Color values

HEX	#121F5C
RGB	rgb(18, 31, 92)
HSL	hsl(229, 67%, 22%)
HSV	hsv(229, 80%, 36%)
CMYK	cmyk(80.4%, 66.3%, 0%, 63.9%)
CIE-LAB	lab(14.85, 19.03, -38.07)
CIE-LCH	lch(14.85, 42.56, 296.56°)
OKLab	oklab(27.33% -0.0027 -0.11)
OKLCH	oklch(27.33% 0.11 268.6)
XYZ	xyz(2.6705, 1.8810, 10.3455)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F5C #5C4F12

analogous

#12445C #121F5C #2A125C

triadic

#121F5C #5C121F #1F5C12

tetradic

#121F5C #5C1244 #5C4F12 #125C2A

square

#121F5C #5C1244 #5C4F12 #125C2A

split-complementary

#121F5C #5C2A12 #445C12

monochromatic

#05091A #080E29 #121F5C #1C308F #2641C2

Accessibility & contrast

On white

15.26

#121F5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#121F5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F5C

15.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F5C	#FFFFFF	#000000	##FFFFFF
##121F5C	1.00	15.26	1.38	15.26
#FFFFFF	15.26	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295E

Deuteranopia (green-blind)

#00225B

Tritanopia (blue-blind)

#002F3A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #121f5c;
/* rgb */ color: rgb(18, 31, 92);
/* oklch */ color: oklch(27.3% 0.110 268.6);

Tailwind

colors: {
  custom: {
    50: '#5d5a8b',
    500: '#121f5c',
    950: '#000000',
  },
}

SCSS

$custom: #121f5c;
$custom-light: #5d5a8b;
$custom-dark: #000000;

JSON

{
  "hex": "#121f5c",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 92
  },
  "hsl": {
    "h": 229.459,
    "s": 67.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.27333,
    "c": 0.11005,
    "h": 268.6
  },
  "luminance": 0.01881
}

Semantic roles & 50–950 ramp

primary

#121F5C

secondary

#948435

accent

#CC3EEA

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121F5C

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

Preview Lab → · Contrast checker → · Palette generator →