#1C4699#1C4699

#1C4699 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.7% C 0.144 H 262.0°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#1C4699
RGB	rgb(28, 70, 153)
HSL	hsl(220, 69%, 35%)
HSV	hsv(220, 82%, 60%)
CMYK	cmyk(81.7%, 54.2%, 0%, 40%)
CIE-LAB	lab(31.64, 17.53, -49.47)
CIE-LCH	lch(31.64, 52.48, 289.51°)
OKLab	oklab(41.67% -0.0199 -0.1426)
OKLCH	oklch(41.67% 0.144 262)
XYZ	xyz(8.4167, 6.9261, 31.0241)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4699 #996F1C

analogous

#1C8499 #1C4699 #301C99

triadic

#1C4699 #991C46 #46991C

tetradic

#1C4699 #991C84 #996F1C #1C9930

square

#1C4699 #991C84 #996F1C #1C9930

split-complementary

#1C4699 #99301C #84991C

monochromatic

#091732 #132E65 #1C4699 #255ECD #5080DF

Accessibility & contrast

On white

8.80

#1C4699 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1C4699 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4699

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4699	#FFFFFF	#000000	##FFFFFF
##1C4699	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03509C

Deuteranopia (green-blind)

#004597

Tritanopia (blue-blind)

#005A68

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1c4699;
/* rgb */ color: rgb(28, 70, 153);
/* oklch */ color: oklch(41.7% 0.144 262.0);

Tailwind

colors: {
  custom: {
    50: '#6e78b8',
    500: '#1c4699',
    950: '#000000',
  },
}

SCSS

$custom: #1c4699;
$custom-light: #6e78b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4699",
  "rgb": {
    "r": 28,
    "g": 70,
    "b": 153
  },
  "hsl": {
    "h": 219.84,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.41671,
    "c": 0.14404,
    "h": 262
  },
  "luminance": 0.06927
}

Semantic roles & 50–950 ramp

primary

#1C4699

secondary

#C29B4F

accent

#B13CEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1C4699

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

Preview Lab → · Contrast checker → · Palette generator →