#12357F#12357F

#12357F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.4% C 0.132 H 262.6°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#12357F
RGB	rgb(18, 53, 127)
HSL	hsl(221, 75%, 28%)
HSV	hsv(221, 86%, 50%)
CMYK	cmyk(85.8%, 58.3%, 0%, 50.2%)
CIE-LAB	lab(24.34, 17.75, -45.27)
CIE-LCH	lch(24.34, 48.62, 291.41°)
OKLab	oklab(35.41% -0.0169 -0.1308)
OKLCH	oklch(35.41% 0.132 262.6)
XYZ	xyz(5.3519, 4.2065, 20.6044)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12357F #7F5C12

analogous

#126B7F #12357F #25127F

triadic

#12357F #7F1235 #357F12

tetradic

#12357F #7F126B #7F5C12 #127F25

square

#12357F #7F126B #7F5C12 #127F25

split-complementary

#12357F #7F2512 #6B7F12

monochromatic

#040B1B #0A1F49 #12357F #1A4BB5 #2B65E1

Accessibility & contrast

On white

11.40

#12357F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#12357F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12357F

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12357F	#FFFFFF	#000000	##FFFFFF
##12357F	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F82

Deuteranopia (green-blind)

#00357E

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #12357f;
/* rgb */ color: rgb(18, 53, 127);
/* oklch */ color: oklch(35.4% 0.132 262.6);

Tailwind

colors: {
  custom: {
    50: '#656ba5',
    500: '#12357f',
    950: '#000000',
  },
}

SCSS

$custom: #12357f;
$custom-light: #656ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#12357f",
  "rgb": {
    "r": 18,
    "g": 53,
    "b": 127
  },
  "hsl": {
    "h": 220.734,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35407,
    "c": 0.13186,
    "h": 262.6
  },
  "luminance": 0.04207
}

Semantic roles & 50–950 ramp

primary

#12357F

secondary

#B58D38

accent

#B536F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #12357F

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

Preview Lab → · Contrast checker → · Palette generator →