#1C258B#1C258B

#1C258B is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.165 H 270.1°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#1C258B
RGB	rgb(28, 37, 139)
HSL	hsl(235, 66%, 33%)
HSV	hsv(235, 80%, 55%)
CMYK	cmyk(79.9%, 73.4%, 0%, 45.5%)
CIE-LAB	lab(21.70, 34.33, -57.10)
CIE-LCH	lch(21.70, 66.63, 301.01°)
OKLab	oklab(33.92% 0.0003 -0.1654)
OKLCH	oklch(33.92% 0.165 270.1)
XYZ	xyz(5.7991, 3.4334, 24.7782)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C258B #8B821C

analogous

#1C5C8B #1C258B #4A1C8B

triadic

#1C258B #8B1C25 #258B1C

tetradic

#1C258B #8B1C5C #8B821C #1C8B4A

square

#1C258B #8B1C5C #8B821C #1C8B4A

split-complementary

#1C258B #8B4A1C #5C8B1C

monochromatic

#070A25 #121758 #1C258B #2633BE #4753DA

Accessibility & contrast

On white

12.45

#1C258B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1C258B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C258B

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C258B	#FFFFFF	#000000	##FFFFFF
##1C258B	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)

#00398E

Deuteranopia (green-blind)

#002F89

Tritanopia (blue-blind)

#004255

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c258b;
/* rgb */ color: rgb(28, 37, 139);
/* oklch */ color: oklch(33.9% 0.165 270.1);

Tailwind

colors: {
  custom: {
    50: '#6d60ae',
    500: '#1c258b',
    950: '#000000',
  },
}

SCSS

$custom: #1c258b;
$custom-light: #6d60ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c258b",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 139
  },
  "hsl": {
    "h": 235.135,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33921,
    "c": 0.16536,
    "h": 270.1
  },
  "luminance": 0.03434
}

Semantic roles & 50–950 ramp

primary

#1C258B

secondary

#BCB247

accent

#DC3EE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1C258B

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

Preview Lab → · Contrast checker → · Palette generator →