#1C4F9D#1C4F9D

#1C4F9D is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.0% C 0.138 H 259.1°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#1C4F9D
RGB	rgb(28, 79, 157)
HSL	hsl(216, 70%, 36%)
HSV	hsv(216, 82%, 62%)
CMYK	cmyk(82.2%, 49.7%, 0%, 38.4%)
CIE-LAB	lab(34.54, 13.02, -47.19)
CIE-LCH	lch(34.54, 48.96, 285.43°)
OKLab	oklab(43.98% -0.0262 -0.1358)
OKLCH	oklch(43.98% 0.138 259.1)
XYZ	xyz(9.3584, 8.2720, 32.9952)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4F9D #9D6A1C

analogous

#1C909D #1C4F9D #2A1C9D

triadic

#1C4F9D #9D1C4F #4F9D1C

tetradic

#1C4F9D #9D1C90 #9D6A1C #1C9D2A

square

#1C4F9D #9D1C90 #9D6A1C #1C9D2A

split-complementary

#1C4F9D #9D2A1C #909D1C

monochromatic

#091B35 #133569 #1C4F9D #2569D1 #538BE0

Accessibility & contrast

On white

7.91

#1C4F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#1C4F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4F9D

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4F9D	#FFFFFF	#000000	##FFFFFF
##1C4F9D	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2157A0

Deuteranopia (green-blind)

#004C9B

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1c4f9d;
/* rgb */ color: rgb(28, 79, 157);
/* oklch */ color: oklch(44.0% 0.138 259.1);

Tailwind

colors: {
  custom: {
    50: '#6e7fba',
    500: '#1c4f9d',
    950: '#000000',
  },
}

SCSS

$custom: #1c4f9d;
$custom-light: #6e7fba;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4f9d",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 157
  },
  "hsl": {
    "h": 216.279,
    "s": 69.73,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43983,
    "c": 0.13827,
    "h": 259.1
  },
  "luminance": 0.08273
}

Semantic roles & 50–950 ramp

primary

#1C4F9D

secondary

#C39651

accent

#A63BED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1C4F9D

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

Preview Lab → · Contrast checker → · Palette generator →