#1C278B#1C278B

#1C278B is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.3% C 0.163 H 269.8°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#1C278B
RGB	rgb(28, 39, 139)
HSL	hsl(234, 66%, 33%)
HSV	hsv(234, 80%, 55%)
CMYK	cmyk(79.9%, 71.9%, 0%, 45.5%)
CIE-LAB	lab(22.16, 33.06, -56.34)
CIE-LCH	lch(22.16, 65.32, 300.40°)
OKLab	oklab(34.25% -0.0007 -0.1631)
OKLCH	oklch(34.25% 0.163 269.8)
XYZ	xyz(5.8630, 3.5613, 24.7995)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C278B #8B801C

analogous

#1C5E8B #1C278B #481C8B

triadic

#1C278B #8B1C27 #278B1C

tetradic

#1C278B #8B1C5E #8B801C #1C8B48

square

#1C278B #8B1C5E #8B801C #1C8B48

split-complementary

#1C278B #8B481C #5E8B1C

monochromatic

#070A25 #121958 #1C278B #2635BE #4756DA

Accessibility & contrast

On white

12.26

#1C278B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1C278B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C278B

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C278B	#FFFFFF	#000000	##FFFFFF
##1C278B	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8E

Deuteranopia (green-blind)

#003089

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1c278b;
/* rgb */ color: rgb(28, 39, 139);
/* oklch */ color: oklch(34.3% 0.163 269.8);

Tailwind

colors: {
  custom: {
    50: '#6d61ae',
    500: '#1c278b',
    950: '#000000',
  },
}

SCSS

$custom: #1c278b;
$custom-light: #6d61ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c278b",
  "rgb": {
    "r": 28,
    "g": 39,
    "b": 139
  },
  "hsl": {
    "h": 234.054,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34254,
    "c": 0.16315,
    "h": 269.8
  },
  "luminance": 0.03562
}

Semantic roles & 50–950 ramp

primary

#1C278B

secondary

#BCB047

accent

#D83EE9

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1C278B

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

Preview Lab → · Contrast checker → · Palette generator →