#1B298F#1B298F

#1B298F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.0% C 0.166 H 268.9°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B298F
RGB	rgb(27, 41, 143)
HSL	hsl(233, 68%, 33%)
HSV	hsv(233, 81%, 56%)
CMYK	cmyk(81.1%, 71.3%, 0%, 43.9%)
CIE-LAB	lab(23.00, 33.17, -57.45)
CIE-LCH	lch(23.00, 66.33, 300.00°)
OKLab	oklab(34.97% -0.0031 -0.1664)
OKLCH	oklch(34.97% 0.166 268.9)
XYZ	xyz(6.2011, 3.8013, 26.3882)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B298F #8F811B

analogous

#1B638F #1B298F #471B8F

triadic

#1B298F #8F1B29 #298F1B

tetradic

#1B298F #8F1B63 #8F811B #1B8F47

square

#1B298F #8F1B63 #8F811B #1B8F47

split-complementary

#1B298F #8F471B #638F1B

monochromatic

#080B28 #111A5C #1B298F #2538C2 #485ADC

Accessibility & contrast

On white

11.93

#1B298F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1B298F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B298F

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B298F	#FFFFFF	#000000	##FFFFFF
##1B298F	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D92

Deuteranopia (green-blind)

#00318D

Tritanopia (blue-blind)

#004559

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b298f;
/* rgb */ color: rgb(27, 41, 143);
/* oklch */ color: oklch(35.0% 0.166 268.9);

Tailwind

colors: {
  custom: {
    50: '#6d63b1',
    500: '#1b298f',
    950: '#000000',
  },
}

SCSS

$custom: #1b298f;
$custom-light: #6d63b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b298f",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 143
  },
  "hsl": {
    "h": 232.759,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.34972,
    "c": 0.16642,
    "h": 268.9
  },
  "luminance": 0.03802
}

Semantic roles & 50–950 ramp

primary

#1B298F

secondary

#BEB048

accent

#D63DEB

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #1B298F

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

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