#1C128E#1C128E

#1C128E is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.8% C 0.186 H 271.8°. Best body text is #FFFFFF at 13.76:1 contrast (WCAG AA passes).

Color values

HEX	#1C128E
RGB	rgb(28, 18, 142)
HSL	hsl(245, 78%, 31%)
HSV	hsv(245, 87%, 56%)
CMYK	cmyk(80.3%, 87.3%, 0%, 44.3%)
CIE-LAB	lab(18.50, 45.55, -64.27)
CIE-LCH	lch(18.50, 78.78, 305.33°)
OKLab	oklab(31.78% 0.0058 -0.1859)
OKLCH	oklch(31.78% 0.186 271.8)
XYZ	xyz(5.5760, 2.6319, 25.8001)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C128E #848E12

analogous

#12468E #1C128E #5A128E

triadic

#1C128E #8E1C12 #128E1C

tetradic

#1C128E #8E1246 #848E12 #128E5A

square

#1C128E #8E1246 #848E12 #128E5A

split-complementary

#1C128E #8E5A12 #468E12

monochromatic

#070421 #110B58 #1C128E #2719C4 #4335E5

Accessibility & contrast

On white

13.76

#1C128E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1C128E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C128E

13.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C128E	#FFFFFF	#000000	##FFFFFF
##1C128E	1.00	13.76	1.53	13.76
#FFFFFF	13.76	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003391

Deuteranopia (green-blind)

#00278C

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c128e;
/* rgb */ color: rgb(28, 18, 142);
/* oklch */ color: oklch(31.8% 0.186 271.8);

Tailwind

colors: {
  custom: {
    50: '#7055b0',
    500: '#1c128e',
    950: '#000000',
  },
}

SCSS

$custom: #1c128e;
$custom-light: #7055b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c128e",
  "rgb": {
    "r": 28,
    "g": 18,
    "b": 142
  },
  "hsl": {
    "h": 244.839,
    "s": 77.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.3178,
    "c": 0.18598,
    "h": 271.8
  },
  "luminance": 0.02632
}

Semantic roles & 50–950 ramp

primary

#1C128E

secondary

#B7C23A

accent

#F434E5

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1C128E

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

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