#12357E#12357E

#12357E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.3% C 0.130 H 262.5°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#12357E
RGB	rgb(18, 53, 126)
HSL	hsl(221, 75%, 28%)
HSV	hsv(221, 86%, 49%)
CMYK	cmyk(85.7%, 57.9%, 0%, 50.6%)
CIE-LAB	lab(24.26, 17.33, -44.77)
CIE-LCH	lch(24.26, 48.01, 291.16°)
OKLab	oklab(35.32% -0.017 -0.1293)
OKLCH	oklch(35.32% 0.13 262.5)
XYZ	xyz(5.2871, 4.1805, 20.2629)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12357E #7E5B12

analogous

#126B7E #12357E #25127E

triadic

#12357E #7E1235 #357E12

tetradic

#12357E #7E126B #7E5B12 #127E25

square

#12357E #7E126B #7E5B12 #127E25

split-complementary

#12357E #7E2512 #6B7E12

monochromatic

#040B1B #0A1E48 #12357E #1A4CB4 #2A65E1

Accessibility & contrast

On white

11.44

#12357E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#12357E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12357E

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12357E	#FFFFFF	#000000	##FFFFFF
##12357E	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F81

Deuteranopia (green-blind)

#00357D

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #12357e;
/* rgb */ color: rgb(18, 53, 126);
/* oklch */ color: oklch(35.3% 0.130 262.5);

Tailwind

colors: {
  custom: {
    50: '#656ba4',
    500: '#12357e',
    950: '#000000',
  },
}

SCSS

$custom: #12357e;
$custom-light: #656ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#12357e",
  "rgb": {
    "r": 18,
    "g": 53,
    "b": 126
  },
  "hsl": {
    "h": 220.556,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35318,
    "c": 0.13043,
    "h": 262.5
  },
  "luminance": 0.04181
}

Semantic roles & 50–950 ramp

primary

#12357E

secondary

#B48C38

accent

#B536F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #12357E

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

Preview Lab → · Contrast checker → · Palette generator →