#1C4281#1C4281

#1C4281 is a dark, moderate blue. Relative luminance 0.057; OKLCH L 38.9% C 0.115 H 260.0°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#1C4281
RGB	rgb(28, 66, 129)
HSL	hsl(217, 64%, 31%)
HSV	hsv(217, 78%, 51%)
CMYK	cmyk(78.3%, 48.8%, 0%, 49.4%)
CIE-LAB	lab(28.71, 10.55, -39.43)
CIE-LCH	lch(28.71, 40.82, 284.99°)
OKLab	oklab(38.88% -0.02 -0.1132)
OKLCH	oklch(38.88% 0.115 260)
XYZ	xyz(6.3881, 5.7276, 21.5335)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4281 #815B1C

analogous

#1C7481 #1C4281 #291C81

triadic

#1C4281 #811C42 #42811C

tetradic

#1C4281 #811C74 #815B1C #1C8129

square

#1C4281 #811C74 #815B1C #1C8129

split-complementary

#1C4281 #81291C #74811C

monochromatic

#060F1C #11284F #1C4281 #275CB3 #4279D6

Accessibility & contrast

On white

9.79

#1C4281 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1C4281 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4281

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4281	#FFFFFF	#000000	##FFFFFF
##1C4281	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204983

Deuteranopia (green-blind)

#043F80

Tritanopia (blue-blind)

#00515B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c4281;
/* rgb */ color: rgb(28, 66, 129);
/* oklch */ color: oklch(38.9% 0.115 260.0);

Tailwind

colors: {
  custom: {
    50: '#6875a6',
    500: '#1c4281',
    950: '#000000',
  },
}

SCSS

$custom: #1c4281;
$custom-light: #6875a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4281",
  "rgb": {
    "r": 28,
    "g": 66,
    "b": 129
  },
  "hsl": {
    "h": 217.426,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.38883,
    "c": 0.11493,
    "h": 260
  },
  "luminance": 0.05728
}

Semantic roles & 50–950 ramp

primary

#1C4281

secondary

#B48A44

accent

#A940E7

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C4281

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

Preview Lab → · Contrast checker → · Palette generator →