#121D5A#121D5A

#121D5A is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.110 H 269.4°. Best body text is #FFFFFF at 15.56:1 contrast (WCAG AA passes).

Color values

HEX	#121D5A
RGB	rgb(18, 29, 90)
HSL	hsl(231, 67%, 21%)
HSV	hsv(231, 80%, 35%)
CMYK	cmyk(80%, 67.8%, 0%, 64.7%)
CIE-LAB	lab(14.09, 19.67, -37.98)
CIE-LCH	lch(14.09, 42.77, 297.38°)
OKLab	oklab(26.71% -0.0011 -0.1098)
OKLCH	oklch(26.71% 0.11 269.4)
XYZ	xyz(2.5336, 1.7452, 9.8742)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D5A #5A4F12

analogous

#12415A #121D5A #2B125A

triadic

#121D5A #5A121D #1D5A12

tetradic

#121D5A #5A1241 #5A4F12 #125A2B

square

#121D5A #5A1241 #5A4F12 #125A2B

split-complementary

#121D5A #5A2B12 #415A12

monochromatic

#05081A #080D27 #121D5A #1C2D8D #263EC0

Accessibility & contrast

On white

15.56

#121D5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#121D5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D5A

15.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D5A	#FFFFFF	#000000	##FFFFFF
##121D5A	1.00	15.56	1.35	15.56
#FFFFFF	15.56	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275C

Deuteranopia (green-blind)

#002059

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #121d5a;
/* rgb */ color: rgb(18, 29, 90);
/* oklch */ color: oklch(26.7% 0.110 269.4);

Tailwind

colors: {
  custom: {
    50: '#5d5889',
    500: '#121d5a',
    950: '#000000',
  },
}

SCSS

$custom: #121d5a;
$custom-light: #5d5889;
$custom-dark: #000000;

JSON

{
  "hex": "#121d5a",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 90
  },
  "hsl": {
    "h": 230.833,
    "s": 66.667,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26711,
    "c": 0.10977,
    "h": 269.4
  },
  "luminance": 0.01746
}

Semantic roles & 50–950 ramp

primary

#121D5A

secondary

#938435

accent

#CF3EEA

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121D5A

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

Preview Lab → · Contrast checker → · Palette generator →