#1C388F#1C388F

#1C388F is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.148 H 265.8°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#1C388F
RGB	rgb(28, 56, 143)
HSL	hsl(225, 67%, 34%)
HSV	hsv(225, 80%, 56%)
CMYK	cmyk(80.4%, 60.8%, 0%, 43.9%)
CIE-LAB	lab(26.90, 23.16, -51.06)
CIE-LCH	lch(26.90, 56.07, 294.40°)
OKLab	oklab(37.85% -0.0108 -0.1476)
OKLCH	oklch(37.85% 0.148 265.8)
XYZ	xyz(6.8492, 5.0576, 26.5965)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C388F #8F731C

analogous

#1C718F #1C388F #391C8F

triadic

#1C388F #8F1C38 #388F1C

tetradic

#1C388F #8F1C71 #8F731C #1C8F39

square

#1C388F #8F1C71 #8F731C #1C8F39

split-complementary

#1C388F #8F391C #718F1C

monochromatic

#081029 #12245C #1C388F #264CC2 #4A6DDC

Accessibility & contrast

On white

10.44

#1C388F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1C388F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C388F

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C388F	#FFFFFF	#000000	##FFFFFF
##1C388F	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004592

Deuteranopia (green-blind)

#003A8D

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1c388f;
/* rgb */ color: rgb(28, 56, 143);
/* oklch */ color: oklch(37.8% 0.148 265.8);

Tailwind

colors: {
  custom: {
    50: '#6c6eb1',
    500: '#1c388f',
    950: '#000000',
  },
}

SCSS

$custom: #1c388f;
$custom-light: #6c6eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c388f",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 143
  },
  "hsl": {
    "h": 225.391,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37847,
    "c": 0.14795,
    "h": 265.8
  },
  "luminance": 0.05058
}

Semantic roles & 50–950 ramp

primary

#1C388F

secondary

#BEA149

accent

#C03EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1C388F

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

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