#1C388D#1C388D

#1C388D is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.145 H 265.7°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#1C388D
RGB	rgb(28, 56, 141)
HSL	hsl(225, 67%, 33%)
HSV	hsv(225, 80%, 55%)
CMYK	cmyk(80.1%, 60.3%, 0%, 44.7%)
CIE-LAB	lab(26.73, 22.37, -50.10)
CIE-LCH	lch(26.73, 54.87, 294.06°)
OKLab	oklab(37.67% -0.0108 -0.1447)
OKLCH	oklch(37.67% 0.145 265.7)
XYZ	xyz(6.6991, 4.9975, 25.8057)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C388D #8D711C

analogous

#1C708D #1C388D #391C8D

triadic

#1C388D #8D1C38 #388D1C

tetradic

#1C388D #8D1C70 #8D711C #1C8D39

square

#1C388D #8D1C70 #8D711C #1C8D39

split-complementary

#1C388D #8D391C #708D1C

monochromatic

#080F27 #12245A #1C388D #264CC0 #496DDB

Accessibility & contrast

On white

10.50

#1C388D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1C388D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C388D

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C388D	#FFFFFF	#000000	##FFFFFF
##1C388D	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003A8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1c388d;
/* rgb */ color: rgb(28, 56, 141);
/* oklch */ color: oklch(37.7% 0.145 265.7);

Tailwind

colors: {
  custom: {
    50: '#6c6eaf',
    500: '#1c388d',
    950: '#000000',
  },
}

SCSS

$custom: #1c388d;
$custom-light: #6c6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1c388d",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 141
  },
  "hsl": {
    "h": 225.133,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37667,
    "c": 0.14515,
    "h": 265.7
  },
  "luminance": 0.04998
}

Semantic roles & 50–950 ramp

primary

#1C388D

secondary

#BDA048

accent

#BF3EEA

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1C388D

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

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