#12257E#12257E

#12257E is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.1% C 0.151 H 267.0°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#12257E
RGB	rgb(18, 37, 126)
HSL	hsl(229, 75%, 28%)
HSV	hsv(229, 86%, 49%)
CMYK	cmyk(85.7%, 70.6%, 0%, 50.6%)
CIE-LAB	lab(19.87, 28.58, -51.95)
CIE-LCH	lch(19.87, 59.29, 298.82°)
OKLab	oklab(32.06% -0.0079 -0.1505)
OKLCH	oklch(32.06% 0.151 267)
XYZ	xyz(4.6756, 2.9575, 20.0590)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12257E #7E6B12

analogous

#125B7E #12257E #35127E

triadic

#12257E #7E1225 #257E12

tetradic

#12257E #7E125B #7E6B12 #127E35

square

#12257E #7E125B #7E6B12 #127E35

split-complementary

#12257E #7E3512 #5B7E12

monochromatic

#04081B #0A1548 #12257E #1A35B4 #2A4AE1

Accessibility & contrast

On white

13.19

#12257E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#12257E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12257E

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12257E	#FFFFFF	#000000	##FFFFFF
##12257E	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003581

Deuteranopia (green-blind)

#002B7C

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #12257e;
/* rgb */ color: rgb(18, 37, 126);
/* oklch */ color: oklch(32.1% 0.151 267.0);

Tailwind

colors: {
  custom: {
    50: '#665fa4',
    500: '#12257e',
    950: '#000000',
  },
}

SCSS

$custom: #12257e;
$custom-light: #665fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#12257e",
  "rgb": {
    "r": 18,
    "g": 37,
    "b": 126
  },
  "hsl": {
    "h": 229.444,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32061,
    "c": 0.15076,
    "h": 267
  },
  "luminance": 0.02958
}

Semantic roles & 50–950 ramp

primary

#12257E

secondary

#B49E38

accent

#D136F2

background

#F6F5FA

surface

#EBE9F4

border

#C6C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #12257E

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

Preview Lab → · Contrast checker → · Palette generator →