#1C3569#1C3569

#1C3569 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.0% C 0.096 H 263.0°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#1C3569
RGB	rgb(28, 53, 105)
HSL	hsl(221, 58%, 26%)
HSV	hsv(221, 73%, 41%)
CMYK	cmyk(73.3%, 49.5%, 0%, 58.8%)
CIE-LAB	lab(23.04, 9.89, -33.32)
CIE-LCH	lch(23.04, 34.76, 286.53°)
OKLab	oklab(33.99% -0.0117 -0.0955)
OKLCH	oklch(33.99% 0.096 263)
XYZ	xyz(4.3009, 3.8126, 13.8711)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3569 #69501C

analogous

#1C5B69 #1C3569 #291C69

triadic

#1C3569 #691C35 #35691C

tetradic

#1C3569 #691C5B #69501C #1C6929

square

#1C3569 #691C5B #69501C #1C6929

split-complementary

#1C3569 #69291C #5B691C

monochromatic

#060C18 #0F1D39 #1C3569 #294D99 #3666C9

Accessibility & contrast

On white

11.91

#1C3569 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1C3569 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3569

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3569	#FFFFFF	#000000	##FFFFFF
##1C3569	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3B6B

Deuteranopia (green-blind)

#093468

Tritanopia (blue-blind)

#00414A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c3569;
/* rgb */ color: rgb(28, 53, 105);
/* oklch */ color: oklch(34.0% 0.096 263.0);

Tailwind

colors: {
  custom: {
    50: '#636b94',
    500: '#1c3569',
    950: '#000000',
  },
}

SCSS

$custom: #1c3569;
$custom-light: #636b94;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3569",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 105
  },
  "hsl": {
    "h": 220.519,
    "s": 57.895,
    "l": 26.078
  },
  "oklch": {
    "l": 0.3399,
    "c": 0.09618,
    "h": 263
  },
  "luminance": 0.03813
}

Semantic roles & 50–950 ramp

primary

#1C3569

secondary

#9E8043

accent

#AF47E1

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1C3569

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

Preview Lab → · Contrast checker → · Palette generator →