#1C237D#1C237D

#1C237D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.1% C 0.149 H 271.2°. Best body text is #FFFFFF at 13.24:1 contrast (WCAG AA passes).

Color values

HEX	#1C237D
RGB	rgb(28, 35, 125)
HSL	hsl(236, 63%, 30%)
HSV	hsv(236, 78%, 49%)
CMYK	cmyk(77.6%, 72%, 0%, 51%)
CIE-LAB	lab(19.76, 30.43, -51.49)
CIE-LCH	lch(19.76, 59.81, 300.59°)
OKLab	oklab(32.08% 0.0031 -0.149)
OKLCH	oklch(32.08% 0.149 271.2)
XYZ	xyz(4.7803, 2.9291, 19.7115)
Luminance	0.0293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C237D #7D761C

analogous

#1C547D #1C237D #451C7D

triadic

#1C237D #7D1C23 #237D1C

tetradic

#1C237D #7D1C54 #7D761C #1C7D45

square

#1C237D #7D1C54 #7D761C #1C7D45

split-complementary

#1C237D #7D451C #547D1C

monochromatic

#060719 #11154B #1C237D #2731AF #3F4AD4

Accessibility & contrast

On white

13.24

#1C237D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1C237D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C237D

13.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C237D	#FFFFFF	#000000	##FFFFFF
##1C237D	1.00	13.24	1.59	13.24
#FFFFFF	13.24	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003480

Deuteranopia (green-blind)

#002B7B

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c237d;
/* rgb */ color: rgb(28, 35, 125);
/* oklch */ color: oklch(32.1% 0.149 271.2);

Tailwind

colors: {
  custom: {
    50: '#695ea4',
    500: '#1c237d',
    950: '#000000',
  },
}

SCSS

$custom: #1c237d;
$custom-light: #695ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c237d",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 125
  },
  "hsl": {
    "h": 235.67,
    "s": 63.399,
    "l": 30
  },
  "oklch": {
    "l": 0.32078,
    "c": 0.14903,
    "h": 271.2
  },
  "luminance": 0.0293
}

Semantic roles & 50–950 ramp

primary

#1C237D

secondary

#B1A944

accent

#DB41E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1C237D

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

Preview Lab → · Contrast checker → · Palette generator →