#1C4481#1C4481

#1C4481 is a dark, moderate blue. Relative luminance 0.060; OKLCH L 39.4% C 0.112 H 258.8°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#1C4481
RGB	rgb(28, 68, 129)
HSL	hsl(216, 64%, 31%)
HSV	hsv(216, 78%, 51%)
CMYK	cmyk(78.3%, 47.3%, 0%, 49.4%)
CIE-LAB	lab(29.32, 9.18, -38.45)
CIE-LCH	lch(29.32, 39.53, 283.42°)
OKLab	oklab(39.35% -0.0218 -0.1103)
OKLCH	oklch(39.35% 0.112 258.8)
XYZ	xyz(6.5070, 5.9654, 21.5731)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4481 #81591C

analogous

#1C7681 #1C4481 #271C81

triadic

#1C4481 #811C44 #44811C

tetradic

#1C4481 #811C76 #81591C #1C8127

square

#1C4481 #811C76 #81591C #1C8127

split-complementary

#1C4481 #81271C #76811C

monochromatic

#060F1C #11294F #1C4481 #275FB3 #427CD6

Accessibility & contrast

On white

9.58

#1C4481 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1C4481 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4481

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4481	#FFFFFF	#000000	##FFFFFF
##1C4481	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244A83

Deuteranopia (green-blind)

#0D4180

Tritanopia (blue-blind)

#00525C

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c4481;
/* rgb */ color: rgb(28, 68, 129);
/* oklch */ color: oklch(39.4% 0.112 258.8);

Tailwind

colors: {
  custom: {
    50: '#6877a6',
    500: '#1c4481',
    950: '#000000',
  },
}

SCSS

$custom: #1c4481;
$custom-light: #6877a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4481",
  "rgb": {
    "r": 28,
    "g": 68,
    "b": 129
  },
  "hsl": {
    "h": 216.238,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39353,
    "c": 0.11239,
    "h": 258.8
  },
  "luminance": 0.05966
}

Semantic roles & 50–950 ramp

primary

#1C4481

secondary

#B48844

accent

#A540E7

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C4481

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

Preview Lab → · Contrast checker → · Palette generator →