#121B40#121B40

#121B40 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.8% C 0.071 H 269.9°. Best body text is #FFFFFF at 16.71:1 contrast (WCAG AA passes).

Color values

HEX	#121B40
RGB	rgb(18, 27, 64)
HSL	hsl(228, 56%, 16%)
HSV	hsv(228, 72%, 25%)
CMYK	cmyk(71.9%, 57.8%, 0%, 74.9%)
CIE-LAB	lab(11.15, 10.21, -24.87)
CIE-LCH	lch(11.15, 26.89, 292.31°)
OKLab	oklab(23.79% -0.0001 -0.0713)
OKLCH	oklch(23.79% 0.071 269.9)
XYZ	xyz(1.5665, 1.2825, 5.0145)
Luminance	0.0128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B40 #403712

analogous

#123240 #121B40 #201240

triadic

#121B40 #40121B #1B4012

tetradic

#121B40 #401232 #403712 #124020

square

#121B40 #401232 #403712 #124020

split-complementary

#121B40 #402012 #324012

monochromatic

#070A18 #070A18 #121B40 #1F2F70 #2D43A0

Accessibility & contrast

On white

16.71

#121B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#121B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B40

16.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B40	#FFFFFF	#000000	##FFFFFF
##121B40	1.00	16.71	1.26	16.71
#FFFFFF	16.71	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#062041

Deuteranopia (green-blind)

#001C3F

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #121b40;
/* rgb */ color: rgb(18, 27, 64);
/* oklch */ color: oklch(23.8% 0.071 269.9);

Tailwind

colors: {
  custom: {
    50: '#565675',
    500: '#121b40',
    950: '#000000',
  },
}

SCSS

$custom: #121b40;
$custom-light: #565675;
$custom-dark: #000000;

JSON

{
  "hex": "#121b40",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 64
  },
  "hsl": {
    "h": 228.261,
    "s": 56.098,
    "l": 16.078
  },
  "oklch": {
    "l": 0.23787,
    "c": 0.07129,
    "h": 269.9
  },
  "luminance": 0.01283
}

Semantic roles & 50–950 ramp

primary

#121B40

secondary

#796C35

accent

#C248DF

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #121B40

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

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