#1F5AB0#1F5AB0

#1F5AB0 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 47.9% C 0.150 H 258.5°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#1F5AB0
RGB	rgb(31, 90, 176)
HSL	hsl(216, 70%, 41%)
HSV	hsv(216, 82%, 69%)
CMYK	cmyk(82.4%, 48.9%, 0%, 31%)
CIE-LAB	lab(39.13, 13.57, -51.11)
CIE-LCH	lch(39.13, 52.88, 284.87°)
OKLab	oklab(47.95% -0.03 -0.147)
OKLCH	oklch(47.95% 0.15 258.5)
XYZ	xyz(12.0548, 10.7368, 42.5029)
Luminance	0.1074 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5AB0 #B0751F

analogous

#1FA2B0 #1F5AB0 #2C1FB0

triadic

#1F5AB0 #B01F5A #5AB01F

tetradic

#1F5AB0 #B01FA2 #B0751F #1FB02C

square

#1F5AB0 #B01FA2 #B0751F #1FB02C

split-complementary

#1F5AB0 #B02C1F #A2B01F

monochromatic

#0D2548 #163F7C #1F5AB0 #3176DB #6599E4

Accessibility & contrast

On white

6.67

#1F5AB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#1F5AB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5AB0

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5AB0	#FFFFFF	#000000	##FFFFFF
##1F5AB0	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2863B3

Deuteranopia (green-blind)

#0056AE

Tritanopia (blue-blind)

#006F7C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1f5ab0;
/* rgb */ color: rgb(31, 90, 176);
/* oklch */ color: oklch(47.9% 0.150 258.5);

Tailwind

colors: {
  custom: {
    50: '#7388c8',
    500: '#1f5ab0',
    950: '#000000',
  },
}

SCSS

$custom: #1f5ab0;
$custom-light: #7388c8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5ab0",
  "rgb": {
    "r": 31,
    "g": 90,
    "b": 176
  },
  "hsl": {
    "h": 215.586,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47949,
    "c": 0.15004,
    "h": 258.5
  },
  "luminance": 0.10738
}

Semantic roles & 50–950 ramp

primary

#1F5AB0

secondary

#C99F62

accent

#A43BED

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1F5AB0

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

Preview Lab → · Contrast checker → · Palette generator →