#1C237E#1C237E

#1C237E is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.2% C 0.150 H 271.1°. Best body text is #FFFFFF at 13.20:1 contrast (WCAG AA passes).

Color values

HEX	#1C237E
RGB	rgb(28, 35, 126)
HSL	hsl(236, 64%, 30%)
HSV	hsv(236, 78%, 49%)
CMYK	cmyk(77.8%, 72.2%, 0%, 50.6%)
CIE-LAB	lab(19.86, 30.81, -51.95)
CIE-LCH	lch(19.86, 60.40, 300.67°)
OKLab	oklab(32.19% 0.003 -0.1504)
OKLCH	oklch(32.19% 0.15 271.1)
XYZ	xyz(4.8445, 2.9548, 20.0496)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C237E #7E771C

analogous

#1C547E #1C237E #461C7E

triadic

#1C237E #7E1C23 #237E1C

tetradic

#1C237E #7E1C54 #7E771C #1C7E46

square

#1C237E #7E1C54 #7E771C #1C7E46

split-complementary

#1C237E #7E461C #547E1C

monochromatic

#06071A #11154C #1C237E #2731B0 #404AD5

Accessibility & contrast

On white

13.20

#1C237E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1C237E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C237E

13.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C237E	#FFFFFF	#000000	##FFFFFF
##1C237E	1.00	13.20	1.59	13.20
#FFFFFF	13.20	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003581

Deuteranopia (green-blind)

#002B7C

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c237e;
/* rgb */ color: rgb(28, 35, 126);
/* oklch */ color: oklch(32.2% 0.150 271.1);

Tailwind

colors: {
  custom: {
    50: '#6a5ea4',
    500: '#1c237e',
    950: '#000000',
  },
}

SCSS

$custom: #1c237e;
$custom-light: #6a5ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c237e",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 126
  },
  "hsl": {
    "h": 235.714,
    "s": 63.636,
    "l": 30.196
  },
  "oklch": {
    "l": 0.32185,
    "c": 0.15038,
    "h": 271.1
  },
  "luminance": 0.02955
}

Semantic roles & 50–950 ramp

primary

#1C237E

secondary

#B2AA44

accent

#DB41E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1C237E

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

Preview Lab → · Contrast checker → · Palette generator →