#1C488B#1C488B

#1C488B is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.0% C 0.122 H 258.9°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#1C488B
RGB	rgb(28, 72, 139)
HSL	hsl(216, 66%, 33%)
HSV	hsv(216, 80%, 55%)
CMYK	cmyk(79.9%, 48.2%, 0%, 45.5%)
CIE-LAB	lab(31.22, 10.50, -41.59)
CIE-LCH	lch(31.22, 42.90, 284.17°)
OKLab	oklab(41.03% -0.0235 -0.1194)
OKLCH	oklch(41.03% 0.122 258.9)
XYZ	xyz(7.4548, 6.7448, 25.3301)
Luminance	0.0675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C488B #8B5F1C

analogous

#1C7F8B #1C488B #271C8B

triadic

#1C488B #8B1C48 #488B1C

tetradic

#1C488B #8B1C7F #8B5F1C #1C8B27

square

#1C488B #8B1C7F #8B5F1C #1C8B27

split-complementary

#1C488B #8B271C #7F8B1C

monochromatic

#071325 #122E58 #1C488B #2662BE #4782DA

Accessibility & contrast

On white

8.94

#1C488B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1C488B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C488B

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C488B	#FFFFFF	#000000	##FFFFFF
##1C488B	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234F8E

Deuteranopia (green-blind)

#04458A

Tritanopia (blue-blind)

#005862

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c488b;
/* rgb */ color: rgb(28, 72, 139);
/* oklch */ color: oklch(41.0% 0.122 258.9);

Tailwind

colors: {
  custom: {
    50: '#6a7aad',
    500: '#1c488b',
    950: '#000000',
  },
}

SCSS

$custom: #1c488b;
$custom-light: #6a7aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c488b",
  "rgb": {
    "r": 28,
    "g": 72,
    "b": 139
  },
  "hsl": {
    "h": 216.216,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.4103,
    "c": 0.12172,
    "h": 258.9
  },
  "luminance": 0.06746
}

Semantic roles & 50–950 ramp

primary

#1C488B

secondary

#BC8E47

accent

#A63EE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1C488B

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

Preview Lab → · Contrast checker → · Palette generator →