#1C1B4E#1C1B4E

#1C1B4E is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.091 H 278.7°. Best body text is #FFFFFF at 15.96:1 contrast (WCAG AA passes).

Color values

HEX	#1C1B4E
RGB	rgb(28, 27, 78)
HSL	hsl(241, 49%, 21%)
HSV	hsv(241, 65%, 31%)
CMYK	cmyk(64.1%, 65.4%, 0%, 69.4%)
CIE-LAB	lab(13.11, 17.99, -31.40)
CIE-LCH	lch(13.11, 36.19, 299.81°)
OKLab	oklab(25.83% 0.0139 -0.0902)
OKLCH	oklch(25.83% 0.091 278.7)
XYZ	xyz(2.2455, 1.5806, 7.3930)
Luminance	0.0158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.58

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1B4E #4D4E1B

analogous

#1B334E #1C1B4E #351B4E

triadic

#1C1B4E #4E1C1B #1B4E1C

tetradic

#1C1B4E #4E1B33 #4D4E1B #1B4E35

square

#1C1B4E #4E1B33 #4D4E1B #1B4E35

split-complementary

#1C1B4E #4E351B #334E1B

monochromatic

#080817 #0C0B21 #1C1B4E #2C2B7B #3D3AA9

Accessibility & contrast

On white

15.96

#1C1B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#1C1B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1B4E

15.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1B4E	#FFFFFF	#000000	##FFFFFF
##1C1B4E	1.00	15.96	1.32	15.96
#FFFFFF	15.96	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002450

Deuteranopia (green-blind)

#00204D

Tritanopia (blue-blind)

#002731

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1c1b4e;
/* rgb */ color: rgb(28, 27, 78);
/* oklch */ color: oklch(25.8% 0.091 278.7);

Tailwind

colors: {
  custom: {
    50: '#5e5780',
    500: '#1c1b4e',
    950: '#000000',
  },
}

SCSS

$custom: #1c1b4e;
$custom-light: #5e5780;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1b4e",
  "rgb": {
    "r": 28,
    "g": 27,
    "b": 78
  },
  "hsl": {
    "h": 241.176,
    "s": 48.571,
    "l": 20.588
  },
  "oklch": {
    "l": 0.25828,
    "c": 0.09124,
    "h": 278.7
  },
  "luminance": 0.01581
}

Semantic roles & 50–950 ramp

primary

#1C1B4E

secondary

#838441

accent

#D850D5

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#05030A

muted

#79787C

Preview Lab

Preview with #1C1B4E

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

Preview Lab → · Contrast checker → · Palette generator →