#12397E#12397E

#12397E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.2% C 0.125 H 260.9°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#12397E
RGB	rgb(18, 57, 126)
HSL	hsl(218, 75%, 28%)
HSV	hsv(218, 86%, 49%)
CMYK	cmyk(85.7%, 54.8%, 0%, 50.6%)
CIE-LAB	lab(25.44, 14.49, -42.85)
CIE-LCH	lch(25.44, 45.23, 288.68°)
OKLab	oklab(36.22% -0.0198 -0.1236)
OKLCH	oklch(36.22% 0.125 260.9)
XYZ	xyz(5.4771, 4.5605, 20.3262)
Luminance	0.0456 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12397E #7E5712

analogous

#126F7E #12397E #21127E

triadic

#12397E #7E1239 #397E12

tetradic

#12397E #7E126F #7E5712 #127E21

square

#12397E #7E126F #7E5712 #127E21

split-complementary

#12397E #7E2112 #6F7E12

monochromatic

#040C1B #0A2148 #12397E #1A51B4 #2A6CE1

Accessibility & contrast

On white

10.98

#12397E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#12397E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12397E

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12397E	#FFFFFF	#000000	##FFFFFF
##12397E	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#044180

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #12397e;
/* rgb */ color: rgb(18, 57, 126);
/* oklch */ color: oklch(36.2% 0.125 260.9);

Tailwind

colors: {
  custom: {
    50: '#656ea4',
    500: '#12397e',
    950: '#000000',
  },
}

SCSS

$custom: #12397e;
$custom-light: #656ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#12397e",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 126
  },
  "hsl": {
    "h": 218.333,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36216,
    "c": 0.12516,
    "h": 260.9
  },
  "luminance": 0.04561
}

Semantic roles & 50–950 ramp

primary

#12397E

secondary

#B48738

accent

#AE36F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #12397E

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

Preview Lab → · Contrast checker → · Palette generator →