#1C238B#1C238B

#1C238B is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.6% C 0.168 H 270.4°. Best body text is #FFFFFF at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#1C238B
RGB	rgb(28, 35, 139)
HSL	hsl(236, 66%, 33%)
HSV	hsv(236, 80%, 55%)
CMYK	cmyk(79.9%, 74.8%, 0%, 45.5%)
CIE-LAB	lab(21.25, 35.57, -57.84)
CIE-LCH	lch(21.25, 67.90, 301.59°)
OKLab	oklab(33.6% 0.0012 -0.1675)
OKLCH	oklch(33.6% 0.168 270.4)
XYZ	xyz(5.7385, 3.3124, 24.7580)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C238B #8B841C

analogous

#1C5B8B #1C238B #4C1C8B

triadic

#1C238B #8B1C23 #238B1C

tetradic

#1C238B #8B1C5B #8B841C #1C8B4C

square

#1C238B #8B1C5B #8B841C #1C8B4C

split-complementary

#1C238B #8B4C1C #5B8B1C

monochromatic

#070925 #121658 #1C238B #2630BE #4751DA

Accessibility & contrast

On white

12.63

#1C238B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1C238B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C238B

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C238B	#FFFFFF	#000000	##FFFFFF
##1C238B	1.00	12.63	1.66	12.63
#FFFFFF	12.63	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388E

Deuteranopia (green-blind)

#002E89

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1c238b;
/* rgb */ color: rgb(28, 35, 139);
/* oklch */ color: oklch(33.6% 0.168 270.4);

Tailwind

colors: {
  custom: {
    50: '#6d5fae',
    500: '#1c238b',
    950: '#000000',
  },
}

SCSS

$custom: #1c238b;
$custom-light: #6d5fae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c238b",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 139
  },
  "hsl": {
    "h": 236.216,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.336,
    "c": 0.16751,
    "h": 270.4
  },
  "luminance": 0.03313
}

Semantic roles & 50–950 ramp

primary

#1C238B

secondary

#BCB447

accent

#DF3EE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1C238B

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

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