#1C3D9B#1C3D9B

#1C3D9B is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.9% C 0.158 H 265.0°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#1C3D9B
RGB	rgb(28, 61, 155)
HSL	hsl(224, 69%, 36%)
HSV	hsv(224, 82%, 61%)
CMYK	cmyk(81.9%, 60.6%, 0%, 39.2%)
CIE-LAB	lab(29.29, 24.49, -54.51)
CIE-LCH	lch(29.29, 59.76, 294.19°)
OKLab	oklab(39.95% -0.0137 -0.1576)
OKLCH	oklch(39.95% 0.158 265)
XYZ	xyz(8.0619, 5.9500, 31.7275)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3D9B #9B7A1C

analogous

#1C7C9B #1C3D9B #3A1C9B

triadic

#1C3D9B #9B1C3D #3D9B1C

tetradic

#1C3D9B #9B1C7C #9B7A1C #1C9B3A

square

#1C3D9B #9B1C7C #9B7A1C #1C9B3A

split-complementary

#1C3D9B #9B3A1C #7C9B1C

monochromatic

#091433 #132967 #1C3D9B #2551CF #5277E0

Accessibility & contrast

On white

9.59

#1C3D9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1C3D9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3D9B

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3D9B	#FFFFFF	#000000	##FFFFFF
##1C3D9B	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c3d9b;
/* rgb */ color: rgb(28, 61, 155);
/* oklch */ color: oklch(39.9% 0.158 265.0);

Tailwind

colors: {
  custom: {
    50: '#6f72b9',
    500: '#1c3d9b',
    950: '#000000',
  },
}

SCSS

$custom: #1c3d9b;
$custom-light: #6f72b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3d9b",
  "rgb": {
    "r": 28,
    "g": 61,
    "b": 155
  },
  "hsl": {
    "h": 224.409,
    "s": 69.399,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39949,
    "c": 0.15822,
    "h": 265
  },
  "luminance": 0.05951
}

Semantic roles & 50–950 ramp

primary

#1C3D9B

secondary

#C3A550

accent

#BE3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3D9B

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

Preview Lab → · Contrast checker → · Palette generator →