#121D58#121D58

#121D58 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.107 H 269.4°. Best body text is #FFFFFF at 15.64:1 contrast (WCAG AA passes).

Color values

HEX	#121D58
RGB	rgb(18, 29, 88)
HSL	hsl(231, 66%, 21%)
HSV	hsv(231, 80%, 35%)
CMYK	cmyk(79.5%, 67%, 0%, 65.5%)
CIE-LAB	lab(13.89, 18.84, -36.95)
CIE-LCH	lch(13.89, 41.48, 297.01°)
OKLab	oklab(26.51% -0.0011 -0.1067)
OKLCH	oklch(26.51% 0.107 269.4)
XYZ	xyz(2.4497, 1.7116, 9.4319)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D58 #584D12

analogous

#124058 #121D58 #2A1258

triadic

#121D58 #58121D #1D5812

tetradic

#121D58 #581240 #584D12 #12582A

square

#121D58 #581240 #584D12 #12582A

split-complementary

#121D58 #582A12 #405812

monochromatic

#050819 #080C25 #121D58 #1C2E8B #273EBE

Accessibility & contrast

On white

15.64

#121D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#121D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D58

15.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D58	#FFFFFF	#000000	##FFFFFF
##121D58	1.00	15.64	1.34	15.64
#FFFFFF	15.64	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275A

Deuteranopia (green-blind)

#002057

Tritanopia (blue-blind)

#002C37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #121d58;
/* rgb */ color: rgb(18, 29, 88);
/* oklch */ color: oklch(26.5% 0.107 269.4);

Tailwind

colors: {
  custom: {
    50: '#5c5888',
    500: '#121d58',
    950: '#000000',
  },
}

SCSS

$custom: #121d58;
$custom-light: #5c5888;
$custom-dark: #000000;

JSON

{
  "hex": "#121d58",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 88
  },
  "hsl": {
    "h": 230.571,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26508,
    "c": 0.10676,
    "h": 269.4
  },
  "luminance": 0.01712
}

Semantic roles & 50–950 ramp

primary

#121D58

secondary

#918235

accent

#CE3FE9

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #121D58

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

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