#1C4F9F#1C4F9F

#1C4F9F is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.1% C 0.141 H 259.4°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#1C4F9F
RGB	rgb(28, 79, 159)
HSL	hsl(217, 70%, 37%)
HSV	hsv(217, 82%, 62%)
CMYK	cmyk(82.4%, 50.3%, 0%, 37.6%)
CIE-LAB	lab(34.68, 13.83, -48.17)
CIE-LCH	lch(34.68, 50.12, 286.02°)
OKLab	oklab(44.13% -0.0259 -0.1386)
OKLCH	oklch(44.13% 0.141 259.4)
XYZ	xyz(9.5306, 8.3409, 33.9018)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4F9F #9F6C1C

analogous

#1C919F #1C4F9F #2B1C9F

triadic

#1C4F9F #9F1C4F #4F9F1C

tetradic

#1C4F9F #9F1C91 #9F6C1C #1C9F2B

square

#1C4F9F #9F1C91 #9F6C1C #1C9F2B

split-complementary

#1C4F9F #9F2B1C #919F1C

monochromatic

#0A1B37 #13356B #1C4F9F #2569D3 #548BE1

Accessibility & contrast

On white

7.87

#1C4F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1C4F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4F9F

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4F9F	#FFFFFF	#000000	##FFFFFF
##1C4F9F	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E58A2

Deuteranopia (green-blind)

#004C9D

Tritanopia (blue-blind)

#00626F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1c4f9f;
/* rgb */ color: rgb(28, 79, 159);
/* oklch */ color: oklch(44.1% 0.141 259.4);

Tailwind

colors: {
  custom: {
    50: '#6f7fbc',
    500: '#1c4f9f',
    950: '#000000',
  },
}

SCSS

$custom: #1c4f9f;
$custom-light: #6f7fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4f9f",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 159
  },
  "hsl": {
    "h": 216.641,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.44134,
    "c": 0.14104,
    "h": 259.4
  },
  "luminance": 0.08342
}

Semantic roles & 50–950 ramp

primary

#1C4F9F

secondary

#C49853

accent

#A83BED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1C4F9F

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

Preview Lab → · Contrast checker → · Palette generator →