#1C337A#1C337A

#1C337A is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.124 H 266.3°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#1C337A
RGB	rgb(28, 51, 122)
HSL	hsl(225, 63%, 29%)
HSV	hsv(225, 77%, 48%)
CMYK	cmyk(77%, 58.2%, 0%, 52.2%)
CIE-LAB	lab(23.73, 18.23, -43.08)
CIE-LCH	lch(23.73, 46.78, 292.94°)
OKLab	oklab(34.93% -0.008 -0.1242)
OKLCH	oklch(34.93% 0.124 266.3)
XYZ	xyz(5.1743, 4.0191, 18.9116)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C337A #7A631C

analogous

#1C627A #1C337A #341C7A

triadic

#1C337A #7A1C33 #337A1C

tetradic

#1C337A #7A1C62 #7A631C #1C7A34

square

#1C337A #7A1C62 #7A631C #1C7A34

split-complementary

#1C337A #7A341C #627A1C

monochromatic

#060A19 #111E48 #1C337A #2748AC #3E62D3

Accessibility & contrast

On white

11.64

#1C337A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1C337A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C337A

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C337A	#FFFFFF	#000000	##FFFFFF
##1C337A	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7C

Deuteranopia (green-blind)

#003479

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c337a;
/* rgb */ color: rgb(28, 51, 122);
/* oklch */ color: oklch(34.9% 0.124 266.3);

Tailwind

colors: {
  custom: {
    50: '#676aa1',
    500: '#1c337a',
    950: '#000000',
  },
}

SCSS

$custom: #1c337a;
$custom-light: #676aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c337a",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 122
  },
  "hsl": {
    "h": 225.319,
    "s": 62.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34926,
    "c": 0.12446,
    "h": 266.3
  },
  "luminance": 0.0402
}

Semantic roles & 50–950 ramp

primary

#1C337A

secondary

#AE9444

accent

#BE42E6

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C337A

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

Preview Lab → · Contrast checker → · Palette generator →