#1A309F#1A309F

#1A309F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.8% C 0.180 H 267.3°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#1A309F
RGB	rgb(26, 48, 159)
HSL	hsl(230, 72%, 36%)
HSV	hsv(230, 84%, 62%)
CMYK	cmyk(83.6%, 69.8%, 0%, 37.6%)
CIE-LAB	lab(26.26, 34.55, -61.91)
CIE-LCH	lch(26.26, 70.90, 299.16°)
OKLab	oklab(37.81% -0.0085 -0.1794)
OKLCH	oklch(37.81% 0.18 267.3)
XYZ	xyz(7.7388, 4.8358, 33.3197)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A309F #9F891A

analogous

#1A739F #1A309F #471A9F

triadic

#1A309F #9F1A30 #309F1A

tetradic

#1A309F #9F1A73 #9F891A #1A9F47

square

#1A309F #9F1A73 #9F891A #1A9F47

split-complementary

#1A309F #9F471A #739F1A

monochromatic

#091036 #11206A #1A309F #2340D4 #5169E3

Accessibility & contrast

On white

10.67

#1A309F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1A309F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A309F

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A309F	#FFFFFF	#000000	##FFFFFF
##1A309F	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A2

Deuteranopia (green-blind)

#00389D

Tritanopia (blue-blind)

#004F63

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1a309f;
/* rgb */ color: rgb(26, 48, 159);
/* oklch */ color: oklch(37.8% 0.180 267.3);

Tailwind

colors: {
  custom: {
    50: '#7168bc',
    500: '#1a309f',
    950: '#000000',
  },
}

SCSS

$custom: #1a309f;
$custom-light: #7168bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1a309f",
  "rgb": {
    "r": 26,
    "g": 48,
    "b": 159
  },
  "hsl": {
    "h": 230.075,
    "s": 71.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37814,
    "c": 0.17961,
    "h": 267.3
  },
  "luminance": 0.04837
}

Semantic roles & 50–950 ramp

primary

#1A309F

secondary

#C5B250

accent

#D139EF

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1A309F

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

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