#1A289F#1A289F

#1A289F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.5% C 0.188 H 268.3°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#1A289F
RGB	rgb(26, 40, 159)
HSL	hsl(234, 72%, 36%)
HSV	hsv(234, 84%, 62%)
CMYK	cmyk(83.6%, 74.8%, 0%, 37.6%)
CIE-LAB	lab(24.45, 39.55, -64.90)
CIE-LCH	lch(24.45, 76.00, 301.35°)
OKLab	oklab(36.51% -0.0055 -0.1881)
OKLCH	oklch(36.51% 0.188 268.3)
XYZ	xyz(7.4406, 4.2395, 33.2203)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A289F #9F911A

analogous

#1A6B9F #1A289F #4F1A9F

triadic

#1A289F #9F1A28 #289F1A

tetradic

#1A289F #9F1A6B #9F911A #1A9F4F

square

#1A289F #9F1A6B #9F911A #1A9F4F

split-complementary

#1A289F #9F4F1A #6B9F1A

monochromatic

#090E36 #111B6A #1A289F #2335D4 #5160E3

Accessibility & contrast

On white

11.36

#1A289F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1A289F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A289F

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A289F	#FFFFFF	#000000	##FFFFFF
##1A289F	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A2

Deuteranopia (green-blind)

#00339D

Tritanopia (blue-blind)

#004B61

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a289f;
/* rgb */ color: rgb(26, 40, 159);
/* oklch */ color: oklch(36.5% 0.188 268.3);

Tailwind

colors: {
  custom: {
    50: '#7263bd',
    500: '#1a289f',
    950: '#000000',
  },
}

SCSS

$custom: #1a289f;
$custom-light: #7263bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1a289f",
  "rgb": {
    "r": 26,
    "g": 40,
    "b": 159
  },
  "hsl": {
    "h": 233.684,
    "s": 71.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36507,
    "c": 0.18818,
    "h": 268.3
  },
  "luminance": 0.0424
}

Semantic roles & 50–950 ramp

primary

#1A289F

secondary

#C5B950

accent

#DC39EF

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1A289F

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

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