#1C3686#1C3686

#1C3686 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.138 H 266.0°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#1C3686
RGB	rgb(28, 54, 134)
HSL	hsl(225, 65%, 32%)
HSV	hsv(225, 79%, 53%)
CMYK	cmyk(79.1%, 59.7%, 0%, 47.5%)
CIE-LAB	lab(25.58, 20.95, -47.62)
CIE-LCH	lch(25.58, 52.03, 293.75°)
OKLab	oklab(36.62% -0.0097 -0.1375)
OKLCH	oklch(36.62% 0.138 266)
XYZ	xyz(6.0996, 4.6058, 23.1172)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3686 #866C1C

analogous

#1C6B86 #1C3686 #371C86

triadic

#1C3686 #861C36 #36861C

tetradic

#1C3686 #861C6B #866C1C #1C8637

square

#1C3686 #861C6B #866C1C #1C8637

split-complementary

#1C3686 #86371C #6B861C

monochromatic

#070D21 #112253 #1C3686 #274AB9 #4469D8

Accessibility & contrast

On white

10.93

#1C3686 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1C3686 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3686

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3686	#FFFFFF	#000000	##FFFFFF
##1C3686	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004289

Deuteranopia (green-blind)

#003884

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1c3686;
/* rgb */ color: rgb(28, 54, 134);
/* oklch */ color: oklch(36.6% 0.138 266.0);

Tailwind

colors: {
  custom: {
    50: '#6a6caa',
    500: '#1c3686',
    950: '#000000',
  },
}

SCSS

$custom: #1c3686;
$custom-light: #6a6caa;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3686",
  "rgb": {
    "r": 28,
    "g": 54,
    "b": 134
  },
  "hsl": {
    "h": 225.283,
    "s": 65.432,
    "l": 31.765
  },
  "oklch": {
    "l": 0.36624,
    "c": 0.13785,
    "h": 266
  },
  "luminance": 0.04606
}

Semantic roles & 50–950 ramp

primary

#1C3686

secondary

#B99D45

accent

#BF3FE8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1C3686

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

Preview Lab → · Contrast checker → · Palette generator →