#12397D#12397D

#12397D is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.124 H 260.7°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#12397D
RGB	rgb(18, 57, 125)
HSL	hsl(218, 75%, 28%)
HSV	hsv(218, 86%, 49%)
CMYK	cmyk(85.6%, 54.4%, 0%, 51%)
CIE-LAB	lab(25.37, 14.07, -42.35)
CIE-LCH	lch(25.37, 44.62, 288.37°)
OKLab	oklab(36.13% -0.0199 -0.1221)
OKLCH	oklch(36.13% 0.124 260.7)
XYZ	xyz(5.4129, 4.5349, 19.9881)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12397D #7D5612

analogous

#126E7D #12397D #21127D

triadic

#12397D #7D1239 #397D12

tetradic

#12397D #7D126E #7D5612 #127D21

square

#12397D #7D126E #7D5612 #127D21

split-complementary

#12397D #7D2112 #6E7D12

monochromatic

#040C1B #0A2148 #12397D #1A51B2 #296CE0

Accessibility & contrast

On white

11.01

#12397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#12397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12397D

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12397D	#FFFFFF	#000000	##FFFFFF
##12397D	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07417F

Deuteranopia (green-blind)

#00387C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #12397d;
/* rgb */ color: rgb(18, 57, 125);
/* oklch */ color: oklch(36.1% 0.124 260.7);

Tailwind

colors: {
  custom: {
    50: '#646ea3',
    500: '#12397d',
    950: '#000000',
  },
}

SCSS

$custom: #12397d;
$custom-light: #646ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#12397d",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 218.131,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36132,
    "c": 0.12372,
    "h": 260.7
  },
  "luminance": 0.04536
}

Semantic roles & 50–950 ramp

primary

#12397D

secondary

#B38638

accent

#AD36F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #12397D

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

Preview Lab → · Contrast checker → · Palette generator →