#1C478B#1C478B

#1C478B is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.8% C 0.123 H 259.4°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#1C478B
RGB	rgb(28, 71, 139)
HSL	hsl(217, 66%, 33%)
HSV	hsv(217, 80%, 55%)
CMYK	cmyk(79.9%, 48.9%, 0%, 45.5%)
CIE-LAB	lab(30.92, 11.18, -42.08)
CIE-LCH	lch(30.92, 43.54, 284.88°)
OKLab	oklab(40.8% -0.0226 -0.1209)
OKLCH	oklch(40.8% 0.123 259.4)
XYZ	xyz(7.3906, 6.6166, 25.3087)
Luminance	0.0662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C478B #8B601C

analogous

#1C7E8B #1C478B #291C8B

triadic

#1C478B #8B1C47 #478B1C

tetradic

#1C478B #8B1C7E #8B601C #1C8B29

square

#1C478B #8B1C7E #8B601C #1C8B29

split-complementary

#1C478B #8B291C #7E8B1C

monochromatic

#071325 #122D58 #1C478B #2661BE #4780DA

Accessibility & contrast

On white

9.04

#1C478B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1C478B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C478B

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C478B	#FFFFFF	#000000	##FFFFFF
##1C478B	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214E8E

Deuteranopia (green-blind)

#00448A

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c478b;
/* rgb */ color: rgb(28, 71, 139);
/* oklch */ color: oklch(40.8% 0.123 259.4);

Tailwind

colors: {
  custom: {
    50: '#6a79ad',
    500: '#1c478b',
    950: '#000000',
  },
}

SCSS

$custom: #1c478b;
$custom-light: #6a79ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c478b",
  "rgb": {
    "r": 28,
    "g": 71,
    "b": 139
  },
  "hsl": {
    "h": 216.757,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.40798,
    "c": 0.12297,
    "h": 259.4
  },
  "luminance": 0.06617
}

Semantic roles & 50–950 ramp

primary

#1C478B

secondary

#BC8F47

accent

#A73EE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1C478B

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

Preview Lab → · Contrast checker → · Palette generator →