#1C2379#1C2379

#1C2379 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.144 H 271.4°. Best body text is #FFFFFF at 13.41:1 contrast (WCAG AA passes).

Color values

HEX	#1C2379
RGB	rgb(28, 35, 121)
HSL	hsl(235, 62%, 29%)
HSV	hsv(235, 77%, 47%)
CMYK	cmyk(76.9%, 71.1%, 0%, 52.5%)
CIE-LAB	lab(19.35, 28.93, -49.62)
CIE-LCH	lch(19.35, 57.44, 300.25°)
OKLab	oklab(31.66% 0.0036 -0.1435)
OKLCH	oklch(31.66% 0.144 271.4)
XYZ	xyz(4.5299, 2.8289, 18.3928)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2379 #79721C

analogous

#1C5279 #1C2379 #441C79

triadic

#1C2379 #791C23 #23791C

tetradic

#1C2379 #791C52 #79721C #1C7944

square

#1C2379 #791C52 #79721C #1C7944

split-complementary

#1C2379 #79441C #52791C

monochromatic

#060719 #101547 #1C2379 #2831AB #3D48D2

Accessibility & contrast

On white

13.41

#1C2379 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1C2379 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2379

13.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2379	#FFFFFF	#000000	##FFFFFF
##1C2379	1.00	13.41	1.57	13.41
#FFFFFF	13.41	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337C

Deuteranopia (green-blind)

#002A77

Tritanopia (blue-blind)

#003A4B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1c2379;
/* rgb */ color: rgb(28, 35, 121);
/* oklch */ color: oklch(31.7% 0.144 271.4);

Tailwind

colors: {
  custom: {
    50: '#685ea1',
    500: '#1c2379',
    950: '#000000',
  },
}

SCSS

$custom: #1c2379;
$custom-light: #685ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2379",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 121
  },
  "hsl": {
    "h": 235.484,
    "s": 62.416,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31655,
    "c": 0.14358,
    "h": 271.4
  },
  "luminance": 0.02829
}

Semantic roles & 50–950 ramp

primary

#1C2379

secondary

#ADA544

accent

#D942E5

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1C2379

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

Preview Lab → · Contrast checker → · Palette generator →