#121D57#121D57

#121D57 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.4% C 0.105 H 269.4°. Best body text is #FFFFFF at 15.68:1 contrast (WCAG AA passes).

Color values

HEX	#121D57
RGB	rgb(18, 29, 87)
HSL	hsl(230, 66%, 21%)
HSV	hsv(230, 79%, 34%)
CMYK	cmyk(79.3%, 66.7%, 0%, 65.9%)
CIE-LAB	lab(13.80, 18.42, -36.43)
CIE-LCH	lch(13.80, 40.82, 296.82°)
OKLab	oklab(26.41% -0.0011 -0.1052)
OKLCH	oklch(26.41% 0.105 269.4)
XYZ	xyz(2.4085, 1.6952, 9.2152)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D57 #574C12

analogous

#123F57 #121D57 #291257

triadic

#121D57 #57121D #1D5712

tetradic

#121D57 #57123F #574C12 #125729

square

#121D57 #57123F #574C12 #125729

split-complementary

#121D57 #572912 #3F5712

monochromatic

#050819 #080C24 #121D57 #1C2E8A #273FBC

Accessibility & contrast

On white

15.68

#121D57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#121D57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D57

15.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D57	#FFFFFF	#000000	##FFFFFF
##121D57	1.00	15.68	1.34	15.68
#FFFFFF	15.68	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002659

Deuteranopia (green-blind)

#002056

Tritanopia (blue-blind)

#002C36

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #121d57;
/* rgb */ color: rgb(18, 29, 87);
/* oklch */ color: oklch(26.4% 0.105 269.4);

Tailwind

colors: {
  custom: {
    50: '#5c5887',
    500: '#121d57',
    950: '#000000',
  },
}

SCSS

$custom: #121d57;
$custom-light: #5c5887;
$custom-dark: #000000;

JSON

{
  "hex": "#121d57",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 87
  },
  "hsl": {
    "h": 230.435,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26407,
    "c": 0.10525,
    "h": 269.4
  },
  "luminance": 0.01695
}

Semantic roles & 50–950 ramp

primary

#121D57

secondary

#908135

accent

#CE3FE9

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #121D57

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

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