#1C238C#1C238C

#1C238C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.169 H 270.3°. Best body text is #FFFFFF at 12.59:1 contrast (WCAG AA passes).

Color values

HEX	#1C238C
RGB	rgb(28, 35, 140)
HSL	hsl(236, 67%, 33%)
HSV	hsv(236, 80%, 55%)
CMYK	cmyk(80%, 75%, 0%, 45.1%)
CIE-LAB	lab(21.36, 35.93, -58.28)
CIE-LCH	lch(21.36, 68.47, 301.66°)
OKLab	oklab(33.71% 0.001 -0.1688)
OKLCH	oklch(33.71% 0.169 270.3)
XYZ	xyz(5.8119, 3.3417, 25.1446)
Luminance	0.0334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C238C #8C851C

analogous

#1C5B8C #1C238C #4D1C8C

triadic

#1C238C #8C1C23 #238C1C

tetradic

#1C238C #8C1C5B #8C851C #1C8C4D

square

#1C238C #8C1C5B #8C851C #1C8C4D

split-complementary

#1C238C #8C4D1C #5B8C1C

monochromatic

#080926 #121659 #1C238C #2630BF #4851DA

Accessibility & contrast

On white

12.59

#1C238C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1C238C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C238C

12.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C238C	#FFFFFF	#000000	##FFFFFF
##1C238C	1.00	12.59	1.67	12.59
#FFFFFF	12.59	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398F

Deuteranopia (green-blind)

#002E8A

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1c238c;
/* rgb */ color: rgb(28, 35, 140);
/* oklch */ color: oklch(33.7% 0.169 270.3);

Tailwind

colors: {
  custom: {
    50: '#6d5faf',
    500: '#1c238c',
    950: '#000000',
  },
}

SCSS

$custom: #1c238c;
$custom-light: #6d5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1c238c",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 140
  },
  "hsl": {
    "h": 236.25,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33711,
    "c": 0.1688,
    "h": 270.3
  },
  "luminance": 0.03342
}

Semantic roles & 50–950 ramp

primary

#1C238C

secondary

#BCB548

accent

#DF3EEA

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1C238C

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

Preview Lab → · Contrast checker → · Palette generator →