#1C237C#1C237C

#1C237C is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.148 H 271.2°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#1C237C
RGB	rgb(28, 35, 124)
HSL	hsl(236, 63%, 30%)
HSV	hsv(236, 77%, 49%)
CMYK	cmyk(77.4%, 71.8%, 0%, 51.4%)
CIE-LAB	lab(19.65, 30.06, -51.02)
CIE-LCH	lch(19.65, 59.22, 300.50°)
OKLab	oklab(31.97% 0.0032 -0.1476)
OKLCH	oklch(31.97% 0.148 271.2)
XYZ	xyz(4.7168, 2.9037, 19.3768)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C237C #7C751C

analogous

#1C537C #1C237C #451C7C

triadic

#1C237C #7C1C23 #237C1C

tetradic

#1C237C #7C1C53 #7C751C #1C7C45

square

#1C237C #7C1C53 #7C751C #1C7C45

split-complementary

#1C237C #7C451C #537C1C

monochromatic

#060719 #11154A #1C237C #2731AE #3F4AD4

Accessibility & contrast

On white

13.28

#1C237C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1C237C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C237C

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C237C	#FFFFFF	#000000	##FFFFFF
##1C237C	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347F

Deuteranopia (green-blind)

#002B7A

Tritanopia (blue-blind)

#003C4C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c237c;
/* rgb */ color: rgb(28, 35, 124);
/* oklch */ color: oklch(32.0% 0.148 271.2);

Tailwind

colors: {
  custom: {
    50: '#695ea3',
    500: '#1c237c',
    950: '#000000',
  },
}

SCSS

$custom: #1c237c;
$custom-light: #695ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c237c",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 124
  },
  "hsl": {
    "h": 235.625,
    "s": 63.158,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31972,
    "c": 0.14768,
    "h": 271.2
  },
  "luminance": 0.02904
}

Semantic roles & 50–950 ramp

primary

#1C237C

secondary

#B0A844

accent

#DA42E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1C237C

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

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