#1C2B80#1C2B80

#1C2B80 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.8% C 0.143 H 269.2°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#1C2B80
RGB	rgb(28, 43, 128)
HSL	hsl(231, 64%, 31%)
HSV	hsv(231, 78%, 50%)
CMYK	cmyk(78.1%, 66.4%, 0%, 49.8%)
CIE-LAB	lab(22.06, 26.21, -49.61)
CIE-LCH	lch(22.06, 56.10, 297.85°)
OKLab	oklab(33.85% -0.002 -0.1435)
OKLCH	oklch(33.85% 0.143 269.2)
XYZ	xyz(5.2377, 3.5326, 20.8237)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2B80 #80711C

analogous

#1C5D80 #1C2B80 #3F1C80

triadic

#1C2B80 #801C2B #2B801C

tetradic

#1C2B80 #801C5D #80711C #1C803F

square

#1C2B80 #801C5D #80711C #1C803F

split-complementary

#1C2B80 #803F1C #5D801C

monochromatic

#06091C #111A4E #1C2B80 #273CB2 #4157D5

Accessibility & contrast

On white

12.31

#1C2B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1C2B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2B80

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2B80	#FFFFFF	#000000	##FFFFFF
##1C2B80	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A83

Deuteranopia (green-blind)

#00307E

Tritanopia (blue-blind)

#004151

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1c2b80;
/* rgb */ color: rgb(28, 43, 128);
/* oklch */ color: oklch(33.8% 0.143 269.2);

Tailwind

colors: {
  custom: {
    50: '#6964a6',
    500: '#1c2b80',
    950: '#000000',
  },
}

SCSS

$custom: #1c2b80;
$custom-light: #6964a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2b80",
  "rgb": {
    "r": 28,
    "g": 43,
    "b": 128
  },
  "hsl": {
    "h": 231,
    "s": 64.103,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33847,
    "c": 0.14347,
    "h": 269.2
  },
  "luminance": 0.03533
}

Semantic roles & 50–950 ramp

primary

#1C2B80

secondary

#B3A344

accent

#CE41E7

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C2B80

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

Preview Lab → · Contrast checker → · Palette generator →