#1C4B9A#1C4B9A

#1C4B9A is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.9% C 0.139 H 260.2°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#1C4B9A
RGB	rgb(28, 75, 154)
HSL	hsl(218, 69%, 36%)
HSV	hsv(218, 82%, 60%)
CMYK	cmyk(81.8%, 51.3%, 0%, 39.6%)
CIE-LAB	lab(33.16, 14.52, -47.62)
CIE-LCH	lch(33.16, 49.78, 286.96°)
OKLab	oklab(42.85% -0.0236 -0.1371)
OKLCH	oklch(42.85% 0.139 260.2)
XYZ	xyz(8.8256, 7.6111, 31.5695)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4B9A #9A6B1C

analogous

#1C8A9A #1C4B9A #2C1C9A

triadic

#1C4B9A #9A1C4B #4B9A1C

tetradic

#1C4B9A #9A1C8A #9A6B1C #1C9A2C

square

#1C4B9A #9A1C8A #9A6B1C #1C9A2C

split-complementary

#1C4B9A #9A2C1C #8A9A1C

monochromatic

#091932 #133266 #1C4B9A #2564CE #5186DF

Accessibility & contrast

On white

8.33

#1C4B9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1C4B9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4B9A

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4B9A	#FFFFFF	#000000	##FFFFFF
##1C4B9A	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19549D

Deuteranopia (green-blind)

#004998

Tritanopia (blue-blind)

#005E6B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1c4b9a;
/* rgb */ color: rgb(28, 75, 154);
/* oklch */ color: oklch(42.9% 0.139 260.2);

Tailwind

colors: {
  custom: {
    50: '#6e7cb8',
    500: '#1c4b9a',
    950: '#000000',
  },
}

SCSS

$custom: #1c4b9a;
$custom-light: #6e7cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4b9a",
  "rgb": {
    "r": 28,
    "g": 75,
    "b": 154
  },
  "hsl": {
    "h": 217.619,
    "s": 69.231,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42854,
    "c": 0.1391,
    "h": 260.2
  },
  "luminance": 0.07612
}

Semantic roles & 50–950 ramp

primary

#1C4B9A

secondary

#C29750

accent

#AA3CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1C4B9A

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

Preview Lab → · Contrast checker → · Palette generator →