#1C379F#1C379F

#1C379F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.2% C 0.171 H 266.6°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#1C379F
RGB	rgb(28, 55, 159)
HSL	hsl(228, 70%, 37%)
HSV	hsv(228, 82%, 62%)
CMYK	cmyk(82.4%, 65.4%, 0%, 37.6%)
CIE-LAB	lab(28.06, 30.11, -58.94)
CIE-LCH	lch(28.06, 66.19, 297.06°)
OKLab	oklab(39.15% -0.0102 -0.1707)
OKLCH	oklch(39.15% 0.171 266.6)
XYZ	xyz(8.1009, 5.4815, 33.4252)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C379F #9F841C

analogous

#1C799F #1C379F #431C9F

triadic

#1C379F #9F1C37 #379F1C

tetradic

#1C379F #9F1C79 #9F841C #1C9F43

square

#1C379F #9F1C79 #9F841C #1C9F43

split-complementary

#1C379F #9F431C #799F1C

monochromatic

#0A1337 #13256B #1C379F #2549D3 #5471E1

Accessibility & contrast

On white

10.02

#1C379F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1C379F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C379F

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C379F	#FFFFFF	#000000	##FFFFFF
##1C379F	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A2

Deuteranopia (green-blind)

#003C9D

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1c379f;
/* rgb */ color: rgb(28, 55, 159);
/* oklch */ color: oklch(39.2% 0.171 266.6);

Tailwind

colors: {
  custom: {
    50: '#716dbc',
    500: '#1c379f',
    950: '#000000',
  },
}

SCSS

$custom: #1c379f;
$custom-light: #716dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c379f",
  "rgb": {
    "r": 28,
    "g": 55,
    "b": 159
  },
  "hsl": {
    "h": 227.634,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39154,
    "c": 0.17098,
    "h": 266.6
  },
  "luminance": 0.05482
}

Semantic roles & 50–950 ramp

primary

#1C379F

secondary

#C4AD53

accent

#C83BED

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C379F

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

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