#12397C#12397C

#12397C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.0% C 0.122 H 260.6°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#12397C
RGB	rgb(18, 57, 124)
HSL	hsl(218, 75%, 28%)
HSV	hsv(218, 85%, 49%)
CMYK	cmyk(85.5%, 54%, 0%, 51.4%)
CIE-LAB	lab(25.29, 13.64, -41.84)
CIE-LCH	lch(25.29, 44.01, 288.06°)
OKLab	oklab(36.05% -0.0201 -0.1206)
OKLCH	oklch(36.05% 0.122 260.6)
XYZ	xyz(5.3493, 4.5094, 19.6533)
Luminance	0.0451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12397C #7C5512

analogous

#126E7C #12397C #20127C

triadic

#12397C #7C1239 #397C12

tetradic

#12397C #7C126E #7C5512 #127C20

square

#12397C #7C126E #7C5512 #127C20

split-complementary

#12397C #7C2012 #6E7C12

monochromatic

#040C1B #0A2047 #12397C #1A52B1 #296CE0

Accessibility & contrast

On white

11.04

#12397C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#12397C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12397C

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12397C	#FFFFFF	#000000	##FFFFFF
##12397C	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09417E

Deuteranopia (green-blind)

#00377B

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #12397c;
/* rgb */ color: rgb(18, 57, 124);
/* oklch */ color: oklch(36.0% 0.122 260.6);

Tailwind

colors: {
  custom: {
    50: '#646ea2',
    500: '#12397c',
    950: '#000000',
  },
}

SCSS

$custom: #12397c;
$custom-light: #646ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#12397c",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 124
  },
  "hsl": {
    "h": 217.925,
    "s": 74.648,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36049,
    "c": 0.12228,
    "h": 260.6
  },
  "luminance": 0.0451
}

Semantic roles & 50–950 ramp

primary

#12397C

secondary

#B28538

accent

#AD37F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #12397C

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

Preview Lab → · Contrast checker → · Palette generator →