#1F30A5#1F30A5

#1F30A5 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.6% C 0.186 H 268.5°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F30A5
RGB	rgb(31, 48, 165)
HSL	hsl(232, 68%, 38%)
HSV	hsv(232, 81%, 65%)
CMYK	cmyk(81.2%, 70.9%, 0%, 35.3%)
CIE-LAB	lab(27.08, 37.14, -64.20)
CIE-LCH	lch(27.08, 74.17, 300.05°)
OKLab	oklab(38.64% -0.0047 -0.186)
OKLCH	oklch(38.64% 0.186 268.5)
XYZ	xyz(8.4112, 5.1208, 36.1351)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F30A5 #A5941F

analogous

#1F73A5 #1F30A5 #511FA5

triadic

#1F30A5 #A51F30 #30A51F

tetradic

#1F30A5 #A51F73 #A5941F #1FA551

square

#1F30A5 #A51F73 #A5941F #1FA551

split-complementary

#1F30A5 #A5511F #73A51F

monochromatic

#0C123E #152171 #1F30A5 #2A40D7 #5E6EE1

Accessibility & contrast

On white

10.37

#1F30A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1F30A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F30A5

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F30A5	#FFFFFF	#000000	##FFFFFF
##1F30A5	1.00	10.37	2.02	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A9

Deuteranopia (green-blind)

#0039A3

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f30a5;
/* rgb */ color: rgb(31, 48, 165);
/* oklch */ color: oklch(38.6% 0.186 268.5);

Tailwind

colors: {
  custom: {
    50: '#7469c1',
    500: '#1f30a5',
    950: '#000000',
  },
}

SCSS

$custom: #1f30a5;
$custom-light: #7469c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f30a5",
  "rgb": {
    "r": 31,
    "g": 48,
    "b": 165
  },
  "hsl": {
    "h": 232.388,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.38644,
    "c": 0.18605,
    "h": 268.5
  },
  "luminance": 0.05122
}

Semantic roles & 50–950 ramp

primary

#1F30A5

secondary

#C5B85B

accent

#D53DEB

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #1F30A5

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

Preview Lab → · Contrast checker → · Palette generator →