#1C238A#1C238A

#1C238A is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.5% C 0.166 H 270.4°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C238A
RGB	rgb(28, 35, 138)
HSL	hsl(236, 66%, 33%)
HSV	hsv(236, 80%, 54%)
CMYK	cmyk(79.7%, 74.6%, 0%, 45.9%)
CIE-LAB	lab(21.14, 35.21, -57.40)
CIE-LCH	lch(21.14, 67.34, 301.53°)
OKLab	oklab(33.49% 0.0013 -0.1662)
OKLCH	oklch(33.49% 0.166 270.4)
XYZ	xyz(5.6658, 3.2833, 24.3750)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C238A #8A831C

analogous

#1C5A8A #1C238A #4C1C8A

triadic

#1C238A #8A1C23 #238A1C

tetradic

#1C238A #8A1C5A #8A831C #1C8A4C

square

#1C238A #8A1C5A #8A831C #1C8A4C

split-complementary

#1C238A #8A4C1C #5A8A1C

monochromatic

#070924 #121657 #1C238A #2630BD #4750DA

Accessibility & contrast

On white

12.68

#1C238A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1C238A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C238A

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C238A	#FFFFFF	#000000	##FFFFFF
##1C238A	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388D

Deuteranopia (green-blind)

#002D88

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1c238a;
/* rgb */ color: rgb(28, 35, 138);
/* oklch */ color: oklch(33.5% 0.166 270.4);

Tailwind

colors: {
  custom: {
    50: '#6d5fad',
    500: '#1c238a',
    950: '#000000',
  },
}

SCSS

$custom: #1c238a;
$custom-light: #6d5fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c238a",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 138
  },
  "hsl": {
    "h": 236.182,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3349,
    "c": 0.16623,
    "h": 270.4
  },
  "luminance": 0.03284
}

Semantic roles & 50–950 ramp

primary

#1C238A

secondary

#BBB446

accent

#DE3FE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1C238A

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

Preview Lab → · Contrast checker → · Palette generator →