#1F299C#1F299C

#1F299C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.6% C 0.182 H 269.8°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F299C
RGB	rgb(31, 41, 156)
HSL	hsl(235, 67%, 37%)
HSV	hsv(235, 80%, 61%)
CMYK	cmyk(80.1%, 73.7%, 0%, 38.8%)
CIE-LAB	lab(24.57, 38.23, -62.87)
CIE-LCH	lch(24.57, 73.58, 301.30°)
OKLab	oklab(36.56% -0.0007 -0.1821)
OKLCH	oklch(36.56% 0.182 269.8)
XYZ	xyz(7.3567, 4.2766, 31.8838)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F299C #9C921F

analogous

#1F689C #1F299C #541F9C

triadic

#1F299C #9C1F29 #299C1F

tetradic

#1F299C #9C1F68 #9C921F #1F9C54

square

#1F299C #9C1F68 #9C921F #1F9C54

split-complementary

#1F299C #9C541F #689C1F

monochromatic

#0B0E36 #151C69 #1F299C #2936CF #5862DE

Accessibility & contrast

On white

11.32

#1F299C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F299C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F299C

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F299C	#FFFFFF	#000000	##FFFFFF
##1F299C	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409F

Deuteranopia (green-blind)

#00349A

Tritanopia (blue-blind)

#004A60

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f299c;
/* rgb */ color: rgb(31, 41, 156);
/* oklch */ color: oklch(36.6% 0.182 269.8);

Tailwind

colors: {
  custom: {
    50: '#7264ba',
    500: '#1f299c',
    950: '#000000',
  },
}

SCSS

$custom: #1f299c;
$custom-light: #7264ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f299c",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 156
  },
  "hsl": {
    "h": 235.2,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36558,
    "c": 0.18211,
    "h": 269.8
  },
  "luminance": 0.04277
}

Semantic roles & 50–950 ramp

primary

#1F299C

secondary

#C1B955

accent

#DC3EEA

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1F299C

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

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