#1757B4#1757B4

#1757B4 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.4% C 0.161 H 258.8°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#1757B4
RGB	rgb(23, 87, 180)
HSL	hsl(216, 77%, 40%)
HSV	hsv(216, 87%, 71%)
CMYK	cmyk(87.2%, 51.7%, 0%, 29.4%)
CIE-LAB	lab(38.36, 16.49, -54.72)
CIE-LCH	lch(38.36, 57.15, 286.77°)
OKLab	oklab(47.39% -0.0312 -0.1578)
OKLCH	oklch(47.39% 0.161 258.8)
XYZ	xyz(11.9967, 10.2923, 44.5255)
Luminance	0.1029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1757B4 #B47417

analogous

#17A6B4 #1757B4 #2517B4

triadic

#1757B4 #B41757 #57B417

tetradic

#1757B4 #B417A6 #B47417 #17B425

square

#1757B4 #B417A6 #B47417 #17B425

split-complementary

#1757B4 #B42517 #A6B417

monochromatic

#092347 #103D7E #1757B4 #2573E3 #5B96EA

Accessibility & contrast

On white

6.87

#1757B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#1757B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1757B4

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1757B4	#FFFFFF	#000000	##FFFFFF
##1757B4	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1662B7

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1757b4;
/* rgb */ color: rgb(23, 87, 180);
/* oklch */ color: oklch(47.4% 0.161 258.8);

Tailwind

colors: {
  custom: {
    50: '#7385cb',
    500: '#1757b4',
    950: '#000000',
  },
}

SCSS

$custom: #1757b4;
$custom-light: #7385cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1757b4",
  "rgb": {
    "r": 23,
    "g": 87,
    "b": 180
  },
  "hsl": {
    "h": 215.541,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47392,
    "c": 0.16085,
    "h": 258.8
  },
  "luminance": 0.10294
}

Semantic roles & 50–950 ramp

primary

#1757B4

secondary

#CE9E59

accent

#A634F4

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1757B4

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

Preview Lab → · Contrast checker → · Palette generator →