#1C258C#1C258C

#1C258C is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.0% C 0.167 H 270.0°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#1C258C
RGB	rgb(28, 37, 140)
HSL	hsl(235, 67%, 33%)
HSV	hsv(235, 80%, 55%)
CMYK	cmyk(80%, 73.6%, 0%, 45.1%)
CIE-LAB	lab(21.81, 34.69, -57.55)
CIE-LCH	lch(21.81, 67.20, 301.08°)
OKLab	oklab(34.03% 0.0001 -0.1667)
OKLCH	oklch(34.03% 0.167 270)
XYZ	xyz(5.8725, 3.4628, 25.1647)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C258C #8C831C

analogous

#1C5D8C #1C258C #4B1C8C

triadic

#1C258C #8C1C25 #258C1C

tetradic

#1C258C #8C1C5D #8C831C #1C8C4B

square

#1C258C #8C1C5D #8C831C #1C8C4B

split-complementary

#1C258C #8C4B1C #5D8C1C

monochromatic

#080A26 #121859 #1C258C #2632BF #4854DA

Accessibility & contrast

On white

12.41

#1C258C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1C258C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C258C

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C258C	#FFFFFF	#000000	##FFFFFF
##1C258C	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8F

Deuteranopia (green-blind)

#002F8A

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c258c;
/* rgb */ color: rgb(28, 37, 140);
/* oklch */ color: oklch(34.0% 0.167 270.0);

Tailwind

colors: {
  custom: {
    50: '#6d60af',
    500: '#1c258c',
    950: '#000000',
  },
}

SCSS

$custom: #1c258c;
$custom-light: #6d60af;
$custom-dark: #000000;

JSON

{
  "hex": "#1c258c",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 140
  },
  "hsl": {
    "h": 235.179,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.3403,
    "c": 0.16666,
    "h": 270
  },
  "luminance": 0.03463
}

Semantic roles & 50–950 ramp

primary

#1C258C

secondary

#BCB348

accent

#DC3EEA

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080510

muted

#7B797F

Preview Lab

Preview with #1C258C

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

Preview Lab → · Contrast checker → · Palette generator →