#1C4991#1C4991

#1C4991 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 41.7% C 0.129 H 259.6°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#1C4991
RGB	rgb(28, 73, 145)
HSL	hsl(217, 68%, 34%)
HSV	hsv(217, 81%, 57%)
CMYK	cmyk(80.7%, 49.7%, 0%, 43.1%)
CIE-LAB	lab(31.93, 12.25, -44.12)
CIE-LCH	lch(31.93, 45.79, 285.51°)
OKLab	oklab(41.71% -0.0233 -0.1268)
OKLCH	oklch(41.71% 0.129 259.6)
XYZ	xyz(7.9704, 7.0554, 27.7243)
Luminance	0.0706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4991 #91641C

analogous

#1C8491 #1C4991 #2A1C91

triadic

#1C4991 #911C49 #49911C

tetradic

#1C4991 #911C84 #91641C #1C912A

square

#1C4991 #911C84 #91641C #1C912A

split-complementary

#1C4991 #912A1C #84911C

monochromatic

#08152A #122F5E #1C4991 #2663C4 #4B83DC

Accessibility & contrast

On white

8.71

#1C4991 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1C4991 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4991

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4991	#FFFFFF	#000000	##FFFFFF
##1C4991	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5194

Deuteranopia (green-blind)

#004690

Tritanopia (blue-blind)

#005A66

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1c4991;
/* rgb */ color: rgb(28, 73, 145);
/* oklch */ color: oklch(41.7% 0.129 259.6);

Tailwind

colors: {
  custom: {
    50: '#6c7bb2',
    500: '#1c4991',
    950: '#000000',
  },
}

SCSS

$custom: #1c4991;
$custom-light: #6c7bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4991",
  "rgb": {
    "r": 28,
    "g": 73,
    "b": 145
  },
  "hsl": {
    "h": 216.923,
    "s": 67.63,
    "l": 33.922
  },
  "oklch": {
    "l": 0.41711,
    "c": 0.12897,
    "h": 259.6
  },
  "luminance": 0.07056
}

Semantic roles & 50–950 ramp

primary

#1C4991

secondary

#BE924A

accent

#A83DEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1C4991

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

Preview Lab → · Contrast checker → · Palette generator →