#1C428C#1C428C

#1C428C is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.7% C 0.131 H 261.9°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#1C428C
RGB	rgb(28, 66, 140)
HSL	hsl(220, 67%, 33%)
HSV	hsv(220, 80%, 55%)
CMYK	cmyk(80%, 52.9%, 0%, 45.1%)
CIE-LAB	lab(29.50, 15.03, -44.98)
CIE-LCH	lch(29.50, 47.42, 288.47°)
OKLab	oklab(39.74% -0.0184 -0.1295)
OKLCH	oklch(39.74% 0.131 261.9)
XYZ	xyz(7.1590, 6.0359, 25.5936)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C428C #8C661C

analogous

#1C7A8C #1C428C #2E1C8C

triadic

#1C428C #8C1C42 #428C1C

tetradic

#1C428C #8C1C7A #8C661C #1C8C2E

square

#1C428C #8C1C7A #8C661C #1C8C2E

split-complementary

#1C428C #8C2E1C #7A8C1C

monochromatic

#081226 #122A59 #1C428C #265ABF #487ADA

Accessibility & contrast

On white

9.51

#1C428C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1C428C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C428C

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C428C	#FFFFFF	#000000	##FFFFFF
##1C428C	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104B8F

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c428c;
/* rgb */ color: rgb(28, 66, 140);
/* oklch */ color: oklch(39.7% 0.131 261.9);

Tailwind

colors: {
  custom: {
    50: '#6b75ae',
    500: '#1c428c',
    950: '#000000',
  },
}

SCSS

$custom: #1c428c;
$custom-light: #6b75ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c428c",
  "rgb": {
    "r": 28,
    "g": 66,
    "b": 140
  },
  "hsl": {
    "h": 219.643,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.39738,
    "c": 0.1308,
    "h": 261.9
  },
  "luminance": 0.06037
}

Semantic roles & 50–950 ramp

primary

#1C428C

secondary

#BC9548

accent

#AF3EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1C428C

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

Preview Lab → · Contrast checker → · Palette generator →