#1C2D8B#1C2D8B

#1C2D8B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.3% C 0.156 H 268.6°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C2D8B
RGB	rgb(28, 45, 139)
HSL	hsl(231, 66%, 33%)
HSV	hsv(231, 80%, 55%)
CMYK	cmyk(79.9%, 67.6%, 0%, 45.5%)
CIE-LAB	lab(23.63, 29.11, -53.93)
CIE-LCH	lch(23.63, 61.29, 298.36°)
OKLab	oklab(35.32% -0.0039 -0.1561)
OKLCH	oklch(35.32% 0.156 268.6)
XYZ	xyz(6.0759, 3.9870, 24.8704)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2D8B #8B7A1C

analogous

#1C648B #1C2D8B #431C8B

triadic

#1C2D8B #8B1C2D #2D8B1C

tetradic

#1C2D8B #8B1C64 #8B7A1C #1C8B43

square

#1C2D8B #8B1C64 #8B7A1C #1C8B43

split-complementary

#1C2D8B #8B431C #648B1C

monochromatic

#070C25 #121D58 #1C2D8B #263DBE #475EDA

Accessibility & contrast

On white

11.68

#1C2D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1C2D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2D8B

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2D8B	#FFFFFF	#000000	##FFFFFF
##1C2D8B	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003389

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c2d8b;
/* rgb */ color: rgb(28, 45, 139);
/* oklch */ color: oklch(35.3% 0.156 268.6);

Tailwind

colors: {
  custom: {
    50: '#6c66ae',
    500: '#1c2d8b',
    950: '#000000',
  },
}

SCSS

$custom: #1c2d8b;
$custom-light: #6c66ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2d8b",
  "rgb": {
    "r": 28,
    "g": 45,
    "b": 139
  },
  "hsl": {
    "h": 230.811,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35318,
    "c": 0.15615,
    "h": 268.6
  },
  "luminance": 0.03988
}

Semantic roles & 50–950 ramp

primary

#1C2D8B

secondary

#BCAA47

accent

#CF3EE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1C2D8B

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

Preview Lab → · Contrast checker → · Palette generator →