#1C3A80#1C3A80

#1C3A80 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.0% C 0.124 H 263.9°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C3A80
RGB	rgb(28, 58, 128)
HSL	hsl(222, 64%, 31%)
HSV	hsv(222, 78%, 50%)
CMYK	cmyk(78.1%, 54.7%, 0%, 49.8%)
CIE-LAB	lab(26.25, 15.73, -42.79)
CIE-LCH	lch(26.25, 45.59, 290.18°)
OKLab	oklab(36.98% -0.0132 -0.1232)
OKLCH	oklch(36.98% 0.124 263.9)
XYZ	xyz(5.8868, 4.8308, 21.0401)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3A80 #80621C

analogous

#1C6C80 #1C3A80 #301C80

triadic

#1C3A80 #801C3A #3A801C

tetradic

#1C3A80 #801C6C #80621C #1C8030

square

#1C3A80 #801C6C #80621C #1C8030

split-complementary

#1C3A80 #80301C #6C801C

monochromatic

#060C1C #11234E #1C3A80 #2751B2 #416ED5

Accessibility & contrast

On white

10.68

#1C3A80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1C3A80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3A80

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3A80	#FFFFFF	#000000	##FFFFFF
##1C3A80	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074382

Deuteranopia (green-blind)

#003A7F

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1c3a80;
/* rgb */ color: rgb(28, 58, 128);
/* oklch */ color: oklch(37.0% 0.124 263.9);

Tailwind

colors: {
  custom: {
    50: '#686fa5',
    500: '#1c3a80',
    950: '#000000',
  },
}

SCSS

$custom: #1c3a80;
$custom-light: #686fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3a80",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 128
  },
  "hsl": {
    "h": 222,
    "s": 64.103,
    "l": 30.588
  },
  "oklch": {
    "l": 0.36975,
    "c": 0.12393,
    "h": 263.9
  },
  "luminance": 0.04832
}

Semantic roles & 50–950 ramp

primary

#1C3A80

secondary

#B39244

accent

#B541E7

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1C3A80

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

Preview Lab → · Contrast checker → · Palette generator →