#1C4A8F#1C4A8F

#1C4A8F is a dark, vivid blue. Relative luminance 0.071; OKLCH L 41.8% C 0.125 H 258.7°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#1C4A8F
RGB	rgb(28, 74, 143)
HSL	hsl(216, 67%, 34%)
HSV	hsv(216, 80%, 56%)
CMYK	cmyk(80.4%, 48.3%, 0%, 43.9%)
CIE-LAB	lab(32.09, 10.76, -42.64)
CIE-LCH	lch(32.09, 43.98, 284.16°)
OKLab	oklab(41.79% -0.0245 -0.1225)
OKLCH	oklch(41.79% 0.125 258.7)
XYZ	xyz(7.8838, 7.1267, 26.9414)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4A8F #8F611C

analogous

#1C838F #1C4A8F #271C8F

triadic

#1C4A8F #8F1C4A #4A8F1C

tetradic

#1C4A8F #8F1C83 #8F611C #1C8F27

square

#1C4A8F #8F1C83 #8F611C #1C8F27

split-complementary

#1C4A8F #8F271C #838F1C

monochromatic

#081529 #12305C #1C4A8F #2664C2 #4A84DC

Accessibility & contrast

On white

8.66

#1C4A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1C4A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4A8F

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4A8F	#FFFFFF	#000000	##FFFFFF
##1C4A8F	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245192

Deuteranopia (green-blind)

#02478E

Tritanopia (blue-blind)

#005A65

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1c4a8f;
/* rgb */ color: rgb(28, 74, 143);
/* oklch */ color: oklch(41.8% 0.125 258.7);

Tailwind

colors: {
  custom: {
    50: '#6b7bb0',
    500: '#1c4a8f',
    950: '#000000',
  },
}

SCSS

$custom: #1c4a8f;
$custom-light: #6b7bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4a8f",
  "rgb": {
    "r": 28,
    "g": 74,
    "b": 143
  },
  "hsl": {
    "h": 216,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.41791,
    "c": 0.12488,
    "h": 258.7
  },
  "luminance": 0.07128
}

Semantic roles & 50–950 ramp

primary

#1C4A8F

secondary

#BE8F49

accent

#A53EEA

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1C4A8F

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

Preview Lab → · Contrast checker → · Palette generator →