#1A128F#1A128F

#1A128F is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.8% C 0.188 H 270.9°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#1A128F
RGB	rgb(26, 18, 143)
HSL	hsl(244, 78%, 32%)
HSV	hsv(244, 87%, 56%)
CMYK	cmyk(81.8%, 87.4%, 0%, 43.9%)
CIE-LAB	lab(18.52, 45.76, -64.88)
CIE-LCH	lch(18.52, 79.39, 305.20°)
OKLab	oklab(31.79% 0.003 -0.1877)
OKLCH	oklch(31.79% 0.188 270.9)
XYZ	xyz(5.5986, 2.6348, 26.1948)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A128F #878F12

analogous

#12498F #1A128F #59128F

triadic

#1A128F #8F1A12 #128F1A

tetradic

#1A128F #8F1249 #878F12 #128F59

square

#1A128F #8F1249 #878F12 #128F59

split-complementary

#1A128F #8F5912 #498F12

monochromatic

#060422 #100B59 #1A128F #2419C5 #4136E6

Accessibility & contrast

On white

13.75

#1A128F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1A128F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A128F

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A128F	#FFFFFF	#000000	##FFFFFF
##1A128F	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003392

Deuteranopia (green-blind)

#00278D

Tritanopia (blue-blind)

#003C54

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1a128f;
/* rgb */ color: rgb(26, 18, 143);
/* oklch */ color: oklch(31.8% 0.188 270.9);

Tailwind

colors: {
  custom: {
    50: '#6f55b1',
    500: '#1a128f',
    950: '#000000',
  },
}

SCSS

$custom: #1a128f;
$custom-light: #6f55b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1a128f",
  "rgb": {
    "r": 26,
    "g": 18,
    "b": 143
  },
  "hsl": {
    "h": 243.84,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31794,
    "c": 0.1877,
    "h": 270.9
  },
  "luminance": 0.02635
}

Semantic roles & 50–950 ramp

primary

#1A128F

secondary

#BAC33A

accent

#F434E8

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1A128F

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

Preview Lab → · Contrast checker → · Palette generator →