#1C238E#1C238E

#1C238E is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.171 H 270.2°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#1C238E
RGB	rgb(28, 35, 142)
HSL	hsl(236, 67%, 33%)
HSV	hsv(236, 80%, 56%)
CMYK	cmyk(80.3%, 75.4%, 0%, 44.3%)
CIE-LAB	lab(21.58, 36.65, -59.17)
CIE-LCH	lch(21.58, 69.60, 301.78°)
OKLab	oklab(33.93% 0.0007 -0.1714)
OKLCH	oklch(33.93% 0.171 270.2)
XYZ	xyz(5.9607, 3.4013, 25.9283)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C238E #8E871C

analogous

#1C5C8E #1C238E #4E1C8E

triadic

#1C238E #8E1C23 #238E1C

tetradic

#1C238E #8E1C5C #8E871C #1C8E4E

square

#1C238E #8E1C5C #8E871C #1C8E4E

split-complementary

#1C238E #8E4E1C #5C8E1C

monochromatic

#080A28 #12165B #1C238E #2630C1 #4952DB

Accessibility & contrast

On white

12.50

#1C238E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1C238E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C238E

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C238E	#FFFFFF	#000000	##FFFFFF
##1C238E	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003991

Deuteranopia (green-blind)

#002E8C

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c238e;
/* rgb */ color: rgb(28, 35, 142);
/* oklch */ color: oklch(33.9% 0.171 270.2);

Tailwind

colors: {
  custom: {
    50: '#6e5fb0',
    500: '#1c238e',
    950: '#000000',
  },
}

SCSS

$custom: #1c238e;
$custom-light: #6e5fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c238e",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 142
  },
  "hsl": {
    "h": 236.316,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33934,
    "c": 0.17136,
    "h": 270.2
  },
  "luminance": 0.03402
}

Semantic roles & 50–950 ramp

primary

#1C238E

secondary

#BDB649

accent

#DF3EEA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1C238E

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

Preview Lab → · Contrast checker → · Palette generator →