#1C3597#1C3597

#1C3597 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.0% C 0.163 H 266.9°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#1C3597
RGB	rgb(28, 53, 151)
HSL	hsl(228, 69%, 35%)
HSV	hsv(228, 81%, 59%)
CMYK	cmyk(81.5%, 64.9%, 0%, 40.8%)
CIE-LAB	lab(26.81, 28.36, -56.12)
CIE-LCH	lch(26.81, 62.88, 296.81°)
OKLab	oklab(38% -0.0089 -0.1624)
OKLCH	oklch(38% 0.163 266.9)
XYZ	xyz(7.3360, 5.0266, 29.8557)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3597 #977E1C

analogous

#1C7297 #1C3597 #411C97

triadic

#1C3597 #971C35 #35971C

tetradic

#1C3597 #971C72 #977E1C #1C9741

square

#1C3597 #971C72 #977E1C #1C9741

split-complementary

#1C3597 #97411C #72971C

monochromatic

#091130 #122363 #1C3597 #2647CB #4F6CDE

Accessibility & contrast

On white

10.47

#1C3597 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1C3597 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3597

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3597	#FFFFFF	#000000	##FFFFFF
##1C3597	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459A

Deuteranopia (green-blind)

#003A95

Tritanopia (blue-blind)

#004F61

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1c3597;
/* rgb */ color: rgb(28, 53, 151);
/* oklch */ color: oklch(38.0% 0.163 266.9);

Tailwind

colors: {
  custom: {
    50: '#6f6cb7',
    500: '#1c3597',
    950: '#000000',
  },
}

SCSS

$custom: #1c3597;
$custom-light: #6f6cb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3597",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 151
  },
  "hsl": {
    "h": 227.805,
    "s": 68.715,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38002,
    "c": 0.16268,
    "h": 266.9
  },
  "luminance": 0.05027
}

Semantic roles & 50–950 ramp

primary

#1C3597

secondary

#C1AA4E

accent

#C83CEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1C3597

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

Preview Lab → · Contrast checker → · Palette generator →