#1A3983#1A3983

#1A3983 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.130 H 263.9°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#1A3983
RGB	rgb(26, 57, 131)
HSL	hsl(222, 67%, 31%)
HSV	hsv(222, 80%, 51%)
CMYK	cmyk(80.2%, 56.5%, 0%, 48.6%)
CIE-LAB	lab(26.11, 17.40, -44.89)
CIE-LCH	lch(26.11, 48.15, 291.19°)
OKLab	oklab(36.92% -0.0137 -0.1295)
OKLCH	oklch(36.92% 0.13 263.9)
XYZ	xyz(5.9844, 4.7839, 22.0763)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3983 #83641A

analogous

#1A6D83 #1A3983 #301A83

triadic

#1A3983 #831A39 #39831A

tetradic

#1A3983 #831A6D #83641A #1A8330

square

#1A3983 #831A6D #83641A #1A8330

split-complementary

#1A3983 #83301A #6D831A

monochromatic

#060D1D #102350 #1A3983 #244FB6 #3F6CD9

Accessibility & contrast

On white

10.73

#1A3983 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1A3983 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3983

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3983	#FFFFFF	#000000	##FFFFFF
##1A3983	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004386

Deuteranopia (green-blind)

#003982

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1a3983;
/* rgb */ color: rgb(26, 57, 131);
/* oklch */ color: oklch(36.9% 0.130 263.9);

Tailwind

colors: {
  custom: {
    50: '#686ea8',
    500: '#1a3983',
    950: '#000000',
  },
}

SCSS

$custom: #1a3983;
$custom-light: #686ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3983",
  "rgb": {
    "r": 26,
    "g": 57,
    "b": 131
  },
  "hsl": {
    "h": 222.286,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36923,
    "c": 0.13019,
    "h": 263.9
  },
  "luminance": 0.04785
}

Semantic roles & 50–950 ramp

primary

#1A3983

secondary

#B79442

accent

#B73EEA

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3983

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

Preview Lab → · Contrast checker → · Palette generator →