#1B297E#1B297E

#1B297E is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.143 H 269.3°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B297E
RGB	rgb(27, 41, 126)
HSL	hsl(232, 65%, 30%)
HSV	hsv(232, 79%, 49%)
CMYK	cmyk(78.6%, 67.5%, 0%, 50.6%)
CIE-LAB	lab(21.30, 26.69, -49.59)
CIE-LCH	lch(21.30, 56.32, 298.29°)
OKLab	oklab(33.22% -0.0017 -0.1435)
OKLCH	oklch(33.22% 0.143 269.3)
XYZ	xyz(5.0095, 3.3247, 20.1123)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B297E #7E701B

analogous

#1B5B7E #1B297E #3E1B7E

triadic

#1B297E #7E1B29 #297E1B

tetradic

#1B297E #7E1B5B #7E701B #1B7E3E

square

#1B297E #7E1B5B #7E701B #1B7E3E

split-complementary

#1B297E #7E3E1B #5B7E1B

monochromatic

#050819 #10194C #1B297E #2639B0 #3E53D6

Accessibility & contrast

On white

12.61

#1B297E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B297E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B297E

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B297E	#FFFFFF	#000000	##FFFFFF
##1B297E	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003881

Deuteranopia (green-blind)

#002F7C

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b297e;
/* rgb */ color: rgb(27, 41, 126);
/* oklch */ color: oklch(33.2% 0.143 269.3);

Tailwind

colors: {
  custom: {
    50: '#6962a4',
    500: '#1b297e',
    950: '#000000',
  },
}

SCSS

$custom: #1b297e;
$custom-light: #6962a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b297e",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 126
  },
  "hsl": {
    "h": 231.515,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.33215,
    "c": 0.14347,
    "h": 269.3
  },
  "luminance": 0.03325
}

Semantic roles & 50–950 ramp

primary

#1B297E

secondary

#B2A243

accent

#D040E8

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1B297E

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

Preview Lab → · Contrast checker → · Palette generator →