#1C238F#1C238F

#1C238F is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.0% C 0.173 H 270.2°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#1C238F
RGB	rgb(28, 35, 143)
HSL	hsl(236, 67%, 34%)
HSV	hsv(236, 80%, 56%)
CMYK	cmyk(80.4%, 75.5%, 0%, 43.9%)
CIE-LAB	lab(21.69, 37.01, -59.60)
CIE-LCH	lch(21.69, 70.16, 301.84°)
OKLab	oklab(34.05% 0.0005 -0.1726)
OKLCH	oklch(34.05% 0.173 270.2)
XYZ	xyz(6.0362, 3.4314, 26.3255)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C238F #8F881C

analogous

#1C5C8F #1C238F #4E1C8F

triadic

#1C238F #8F1C23 #238F1C

tetradic

#1C238F #8F1C5C #8F881C #1C8F4E

square

#1C238F #8F1C5C #8F881C #1C8F4E

split-complementary

#1C238F #8F4E1C #5C8F1C

monochromatic

#080A29 #12165C #1C238F #2630C2 #4A53DC

Accessibility & contrast

On white

12.45

#1C238F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1C238F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C238F

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C238F	#FFFFFF	#000000	##FFFFFF
##1C238F	1.00	12.45	1.69	12.45
#FFFFFF	12.45	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A92

Deuteranopia (green-blind)

#002E8D

Tritanopia (blue-blind)

#004257

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c238f;
/* rgb */ color: rgb(28, 35, 143);
/* oklch */ color: oklch(34.0% 0.173 270.2);

Tailwind

colors: {
  custom: {
    50: '#6e5fb1',
    500: '#1c238f',
    950: '#000000',
  },
}

SCSS

$custom: #1c238f;
$custom-light: #6e5fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c238f",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 143
  },
  "hsl": {
    "h": 236.348,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34046,
    "c": 0.17263,
    "h": 270.2
  },
  "luminance": 0.03432
}

Semantic roles & 50–950 ramp

primary

#1C238F

secondary

#BEB749

accent

#E03EEA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1C238F

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

Preview Lab → · Contrast checker → · Palette generator →