#1C3397#1C3397

#1C3397 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.6% C 0.165 H 267.3°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#1C3397
RGB	rgb(28, 51, 151)
HSL	hsl(229, 69%, 35%)
HSV	hsv(229, 81%, 59%)
CMYK	cmyk(81.5%, 66.2%, 0%, 40.8%)
CIE-LAB	lab(26.30, 29.70, -56.96)
CIE-LCH	lch(26.30, 64.24, 297.54°)
OKLab	oklab(37.63% -0.0078 -0.1649)
OKLCH	oklch(37.63% 0.165 267.3)
XYZ	xyz(7.2467, 4.8480, 29.8260)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3397 #97801C

analogous

#1C7197 #1C3397 #421C97

triadic

#1C3397 #971C33 #33971C

tetradic

#1C3397 #971C71 #97801C #1C9742

square

#1C3397 #971C71 #97801C #1C9742

split-complementary

#1C3397 #97421C #71971C

monochromatic

#091030 #122263 #1C3397 #2644CB #4F6ADE

Accessibility & contrast

On white

10.66

#1C3397 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1C3397 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3397

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3397	#FFFFFF	#000000	##FFFFFF
##1C3397	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449A

Deuteranopia (green-blind)

#003895

Tritanopia (blue-blind)

#004E60

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1c3397;
/* rgb */ color: rgb(28, 51, 151);
/* oklch */ color: oklch(37.6% 0.165 267.3);

Tailwind

colors: {
  custom: {
    50: '#6f6ab7',
    500: '#1c3397',
    950: '#000000',
  },
}

SCSS

$custom: #1c3397;
$custom-light: #6f6ab7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3397",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 151
  },
  "hsl": {
    "h": 228.78,
    "s": 68.715,
    "l": 35.098
  },
  "oklch": {
    "l": 0.37625,
    "c": 0.16511,
    "h": 267.3
  },
  "luminance": 0.04849
}

Semantic roles & 50–950 ramp

primary

#1C3397

secondary

#C1AB4E

accent

#CB3CEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1C3397

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

Preview Lab → · Contrast checker → · Palette generator →