#1B2DA0#1B2DA0

#1B2DA0 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.5% C 0.184 H 268.0°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B2DA0
RGB	rgb(27, 45, 160)
HSL	hsl(232, 71%, 37%)
HSV	hsv(232, 83%, 63%)
CMYK	cmyk(83.1%, 71.9%, 0%, 37.3%)
CIE-LAB	lab(25.70, 36.90, -63.44)
CIE-LCH	lch(25.70, 73.39, 300.19°)
OKLab	oklab(37.45% -0.0065 -0.1838)
OKLCH	oklch(37.45% 0.184 268)
XYZ	xyz(7.7333, 4.6469, 33.7403)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2DA0 #A08E1B

analogous

#1B70A0 #1B2DA0 #4C1BA0

triadic

#1B2DA0 #A01B2D #2DA01B

tetradic

#1B2DA0 #A01B70 #A08E1B #1BA04C

square

#1B2DA0 #A01B70 #A08E1B #1BA04C

split-complementary

#1B2DA0 #A04C1B #70A01B

monochromatic

#091037 #121E6C #1B2DA0 #243CD4 #5367E2

Accessibility & contrast

On white

10.88

#1B2DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1B2DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2DA0

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2DA0	#FFFFFF	#000000	##FFFFFF
##1B2DA0	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A3

Deuteranopia (green-blind)

#00369E

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b2da0;
/* rgb */ color: rgb(27, 45, 160);
/* oklch */ color: oklch(37.5% 0.184 268.0);

Tailwind

colors: {
  custom: {
    50: '#7266bd',
    500: '#1b2da0',
    950: '#000000',
  },
}

SCSS

$custom: #1b2da0;
$custom-light: #7266bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2da0",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 160
  },
  "hsl": {
    "h": 231.88,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.37452,
    "c": 0.18396,
    "h": 268
  },
  "luminance": 0.04648
}

Semantic roles & 50–950 ramp

primary

#1B2DA0

secondary

#C5B552

accent

#D63AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1B2DA0

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

Preview Lab → · Contrast checker → · Palette generator →