#1C388E#1C388E

#1C388E is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.8% C 0.147 H 265.8°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#1C388E
RGB	rgb(28, 56, 142)
HSL	hsl(225, 67%, 33%)
HSV	hsv(225, 80%, 56%)
CMYK	cmyk(80.3%, 60.6%, 0%, 44.3%)
CIE-LAB	lab(26.81, 22.76, -50.58)
CIE-LCH	lch(26.81, 55.47, 294.23°)
OKLab	oklab(37.76% -0.0108 -0.1462)
OKLCH	oklch(37.76% 0.147 265.8)
XYZ	xyz(6.7738, 5.0274, 26.1993)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C388E #8E721C

analogous

#1C718E #1C388E #391C8E

triadic

#1C388E #8E1C38 #388E1C

tetradic

#1C388E #8E1C71 #8E721C #1C8E39

square

#1C388E #8E1C71 #8E721C #1C8E39

split-complementary

#1C388E #8E391C #718E1C

monochromatic

#081028 #12245B #1C388E #264CC1 #496DDB

Accessibility & contrast

On white

10.47

#1C388E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1C388E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C388E

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C388E	#FFFFFF	#000000	##FFFFFF
##1C388E	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003A8C

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1c388e;
/* rgb */ color: rgb(28, 56, 142);
/* oklch */ color: oklch(37.8% 0.147 265.8);

Tailwind

colors: {
  custom: {
    50: '#6c6eb0',
    500: '#1c388e',
    950: '#000000',
  },
}

SCSS

$custom: #1c388e;
$custom-light: #6c6eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c388e",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 142
  },
  "hsl": {
    "h": 225.263,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37757,
    "c": 0.14656,
    "h": 265.8
  },
  "luminance": 0.05028
}

Semantic roles & 50–950 ramp

primary

#1C388E

secondary

#BDA149

accent

#C03EEA

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1C388E

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

Preview Lab → · Contrast checker → · Palette generator →