#1C3A9F#1C3A9F

#1C3A9F is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.167 H 265.9°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#1C3A9F
RGB	rgb(28, 58, 159)
HSL	hsl(226, 70%, 37%)
HSV	hsv(226, 82%, 62%)
CMYK	cmyk(82.4%, 63.5%, 0%, 37.6%)
CIE-LAB	lab(28.84, 28.09, -57.68)
CIE-LCH	lch(28.84, 64.15, 295.97°)
OKLab	oklab(39.73% -0.0119 -0.1669)
OKLCH	oklch(39.73% 0.167 265.9)
XYZ	xyz(8.2478, 5.7752, 33.4742)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3A9F #9F811C

analogous

#1C7B9F #1C3A9F #401C9F

triadic

#1C3A9F #9F1C3A #3A9F1C

tetradic

#1C3A9F #9F1C7B #9F811C #1C9F40

square

#1C3A9F #9F1C7B #9F811C #1C9F40

split-complementary

#1C3A9F #9F401C #7B9F1C

monochromatic

#0A1437 #13276B #1C3A9F #254DD3 #5475E1

Accessibility & contrast

On white

9.74

#1C3A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1C3A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3A9F

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3A9F	#FFFFFF	#000000	##FFFFFF
##1C3A9F	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA2

Deuteranopia (green-blind)

#003E9D

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c3a9f;
/* rgb */ color: rgb(28, 58, 159);
/* oklch */ color: oklch(39.7% 0.167 265.9);

Tailwind

colors: {
  custom: {
    50: '#706fbc',
    500: '#1c3a9f',
    950: '#000000',
  },
}

SCSS

$custom: #1c3a9f;
$custom-light: #706fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3a9f",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 159
  },
  "hsl": {
    "h": 226.26,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39725,
    "c": 0.16735,
    "h": 265.9
  },
  "luminance": 0.05776
}

Semantic roles & 50–950 ramp

primary

#1C3A9F

secondary

#C4AA53

accent

#C43BED

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3A9F

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

Preview Lab → · Contrast checker → · Palette generator →