#1C166B#1C166B

#1C166B is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.0% C 0.139 H 275.6°. Best body text is #FFFFFF at 15.26:1 contrast (WCAG AA passes).

Color values

HEX	#1C166B
RGB	rgb(28, 22, 107)
HSL	hsl(244, 66%, 25%)
HSV	hsv(244, 79%, 42%)
CMYK	cmyk(73.8%, 79.4%, 0%, 58%)
CIE-LAB	lab(14.85, 32.05, -47.96)
CIE-LCH	lch(14.85, 57.69, 303.76°)
OKLab	oklab(27.99% 0.0137 -0.1387)
OKLCH	oklch(27.99% 0.139 275.6)
XYZ	xyz(3.4188, 1.8819, 14.0901)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C166B #656B16

analogous

#163B6B #1C166B #46166B

triadic

#1C166B #6B1C16 #166B1C

tetradic

#1C166B #6B163B #656B16 #166B46

square

#1C166B #6B163B #656B16 #166B46

split-complementary

#1C166B #6B4616 #3B6B16

monochromatic

#070519 #0F0C38 #1C166B #29209E #372BD1

Accessibility & contrast

On white

15.26

#1C166B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1C166B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C166B

15.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C166B	#FFFFFF	#000000	##FFFFFF
##1C166B	1.00	15.26	1.38	15.26
#FFFFFF	15.26	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00296D

Deuteranopia (green-blind)

#002269

Tritanopia (blue-blind)

#002F3F

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1c166b;
/* rgb */ color: rgb(28, 22, 107);
/* oklch */ color: oklch(28.0% 0.139 275.6);

Tailwind

colors: {
  custom: {
    50: '#665596',
    500: '#1c166b',
    950: '#000000',
  },
}

SCSS

$custom: #1c166b;
$custom-light: #665596;
$custom-dark: #000000;

JSON

{
  "hex": "#1c166b",
  "rgb": {
    "r": 28,
    "g": 22,
    "b": 107
  },
  "hsl": {
    "h": 244.235,
    "s": 65.891,
    "l": 25.294
  },
  "oklch": {
    "l": 0.27988,
    "c": 0.13934,
    "h": 275.6
  },
  "luminance": 0.01882
}

Semantic roles & 50–950 ramp

primary

#1C166B

secondary

#9AA13B

accent

#E93FDD

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1C166B

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

Preview Lab → · Contrast checker → · Palette generator →