#12357C#12357C

#12357C is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.1% C 0.128 H 262.3°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#12357C
RGB	rgb(18, 53, 124)
HSL	hsl(220, 75%, 28%)
HSV	hsv(220, 85%, 49%)
CMYK	cmyk(85.5%, 57.3%, 0%, 51.4%)
CIE-LAB	lab(24.09, 16.49, -43.78)
CIE-LCH	lch(24.09, 46.78, 290.64°)
OKLab	oklab(35.14% -0.0172 -0.1264)
OKLCH	oklch(35.14% 0.128 262.3)
XYZ	xyz(5.1593, 4.1294, 19.5900)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12357C #7C5912

analogous

#126A7C #12357C #24127C

triadic

#12357C #7C1235 #357C12

tetradic

#12357C #7C126A #7C5912 #127C24

square

#12357C #7C126A #7C5912 #127C24

split-complementary

#12357C #7C2412 #6A7C12

monochromatic

#040B1B #0A1E47 #12357C #1A4CB1 #2965E0

Accessibility & contrast

On white

11.50

#12357C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#12357C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12357C

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12357C	#FFFFFF	#000000	##FFFFFF
##12357C	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7E

Deuteranopia (green-blind)

#00357B

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #12357c;
/* rgb */ color: rgb(18, 53, 124);
/* oklch */ color: oklch(35.1% 0.128 262.3);

Tailwind

colors: {
  custom: {
    50: '#646ba3',
    500: '#12357c',
    950: '#000000',
  },
}

SCSS

$custom: #12357c;
$custom-light: #646ba3;
$custom-dark: #000000;

JSON

{
  "hex": "#12357c",
  "rgb": {
    "r": 18,
    "g": 53,
    "b": 124
  },
  "hsl": {
    "h": 220.189,
    "s": 74.648,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35141,
    "c": 0.12756,
    "h": 262.3
  },
  "luminance": 0.0413
}

Semantic roles & 50–950 ramp

primary

#12357C

secondary

#B28A38

accent

#B437F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06060F

muted

#7A7A7F

Preview Lab

Preview with #12357C

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

Preview Lab → · Contrast checker → · Palette generator →