#1C438B#1C438B

#1C438B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.9% C 0.128 H 261.3°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#1C438B
RGB	rgb(28, 67, 139)
HSL	hsl(219, 66%, 33%)
HSV	hsv(219, 80%, 55%)
CMYK	cmyk(79.9%, 51.8%, 0%, 45.5%)
CIE-LAB	lab(29.72, 13.93, -44.00)
CIE-LCH	lch(29.72, 46.15, 287.57°)
OKLab	oklab(39.88% -0.0193 -0.1266)
OKLCH	oklch(39.88% 0.128 261.3)
XYZ	xyz(7.1446, 6.1244, 25.2267)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C438B #8B641C

analogous

#1C7A8B #1C438B #2D1C8B

triadic

#1C438B #8B1C43 #438B1C

tetradic

#1C438B #8B1C7A #8B641C #1C8B2D

square

#1C438B #8B1C7A #8B641C #1C8B2D

split-complementary

#1C438B #8B2D1C #7A8B1C

monochromatic

#071225 #122A58 #1C438B #265CBE #477BDA

Accessibility & contrast

On white

9.44

#1C438B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1C438B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C438B

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C438B	#FFFFFF	#000000	##FFFFFF
##1C438B	1.00	9.44	2.23	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164B8E

Deuteranopia (green-blind)

#00418A

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1c438b;
/* rgb */ color: rgb(28, 67, 139);
/* oklch */ color: oklch(39.9% 0.128 261.3);

Tailwind

colors: {
  custom: {
    50: '#6a76ad',
    500: '#1c438b',
    950: '#000000',
  },
}

SCSS

$custom: #1c438b;
$custom-light: #6a76ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c438b",
  "rgb": {
    "r": 28,
    "g": 67,
    "b": 139
  },
  "hsl": {
    "h": 218.919,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.39883,
    "c": 0.12808,
    "h": 261.3
  },
  "luminance": 0.06125
}

Semantic roles & 50–950 ramp

primary

#1C438B

secondary

#BC9347

accent

#AD3EE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1C438B

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

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