#1C3F7D#1C3F7D

#1C3F7D is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.113 H 260.8°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#1C3F7D
RGB	rgb(28, 63, 125)
HSL	hsl(218, 63%, 30%)
HSV	hsv(218, 78%, 49%)
CMYK	cmyk(77.6%, 49.6%, 0%, 51%)
CIE-LAB	lab(27.52, 11.01, -38.85)
CIE-LCH	lch(27.52, 40.37, 285.82°)
OKLab	oklab(37.88% -0.018 -0.1115)
OKLCH	oklch(37.88% 0.113 260.8)
XYZ	xyz(5.9567, 5.2819, 20.1036)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3F7D #7D5A1C

analogous

#1C6F7D #1C3F7D #2A1C7D

triadic

#1C3F7D #7D1C3F #3F7D1C

tetradic

#1C3F7D #7D1C6F #7D5A1C #1C7D2A

square

#1C3F7D #7D1C6F #7D5A1C #1C7D2A

split-complementary

#1C3F7D #7D2A1C #6F7D1C

monochromatic

#060D19 #11264B #1C3F7D #2758AF #3F75D4

Accessibility & contrast

On white

10.21

#1C3F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1C3F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3F7D

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3F7D	#FFFFFF	#000000	##FFFFFF
##1C3F7D	1.00	10.21	2.06	10.21
#FFFFFF	10.21	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D467F

Deuteranopia (green-blind)

#013D7C

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1c3f7d;
/* rgb */ color: rgb(28, 63, 125);
/* oklch */ color: oklch(37.9% 0.113 260.8);

Tailwind

colors: {
  custom: {
    50: '#6773a3',
    500: '#1c3f7d',
    950: '#000000',
  },
}

SCSS

$custom: #1c3f7d;
$custom-light: #6773a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3f7d",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 218.351,
    "s": 63.399,
    "l": 30
  },
  "oklch": {
    "l": 0.37878,
    "c": 0.11296,
    "h": 260.8
  },
  "luminance": 0.05283
}

Semantic roles & 50–950 ramp

primary

#1C3F7D

secondary

#B18A44

accent

#AB41E6

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C3F7D

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

Preview Lab → · Contrast checker → · Palette generator →