#1A3883#1A3883

#1A3883 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.7% C 0.132 H 264.3°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#1A3883
RGB	rgb(26, 56, 131)
HSL	hsl(223, 67%, 31%)
HSV	hsv(223, 80%, 51%)
CMYK	cmyk(80.2%, 57.3%, 0%, 48.6%)
CIE-LAB	lab(25.82, 18.11, -45.36)
CIE-LCH	lch(25.82, 48.84, 291.76°)
OKLab	oklab(36.7% -0.013 -0.1309)
OKLCH	oklch(36.7% 0.132 264.3)
XYZ	xyz(5.9355, 4.6860, 22.0600)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3883 #83651A

analogous

#1A6C83 #1A3883 #301A83

triadic

#1A3883 #831A38 #38831A

tetradic

#1A3883 #831A6C #83651A #1A8330

square

#1A3883 #831A6C #83651A #1A8330

split-complementary

#1A3883 #83301A #6C831A

monochromatic

#060C1D #102250 #1A3883 #244EB6 #3F6BD9

Accessibility & contrast

On white

10.84

#1A3883 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1A3883 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3883

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3883	#FFFFFF	#000000	##FFFFFF
##1A3883	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004286

Deuteranopia (green-blind)

#003982

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1a3883;
/* rgb */ color: rgb(26, 56, 131);
/* oklch */ color: oklch(36.7% 0.132 264.3);

Tailwind

colors: {
  custom: {
    50: '#686ea8',
    500: '#1a3883',
    950: '#000000',
  },
}

SCSS

$custom: #1a3883;
$custom-light: #686ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3883",
  "rgb": {
    "r": 26,
    "g": 56,
    "b": 131
  },
  "hsl": {
    "h": 222.857,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36704,
    "c": 0.1315,
    "h": 264.3
  },
  "luminance": 0.04687
}

Semantic roles & 50–950 ramp

primary

#1A3883

secondary

#B79542

accent

#B93EEA

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3883

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

Preview Lab → · Contrast checker → · Palette generator →