#5783AE
Closest named color: Off Blue (#5684AE). oklch(59.6% 0.082 248.8), rgb(87, 131, 174).
Aa
Black text reads best on this color (5.26:1).
About this color
#5783AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.082 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.003 away. Black text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.26:1 |
| White text | 3.99:1 |
Values
| HEX | #5783AE |
| RGB | rgb(87, 131, 174) |
| HSL | hsl(210, 35%, 51%) |
| OKLCH | oklch(59.6% 0.082 248.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5783AE | 3.99:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #5783AE | 5.26:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #5783AE text on white | 3.99:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #5783AE text on black | 5.26:1 | AA | Lc -34.5 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DA
oklch(80.8% 0.041 249.5)
-
Step 400
400
#82A4C7
oklch(70.6% 0.064 249.5)
-
Step 500
500 (this color)
#5783AE
oklch(59.6% 0.082 248.8)
-
Step 600
600
#4777A5
oklch(55.5% 0.089 248.7)
-
Step 700
700
#38648E
oklch(49.1% 0.084 248.9)
-
Step 800
800
#2F5273
oklch(42.7% 0.069 248.4)
-
Step 900
900
#2A445D
oklch(37.7% 0.054 248.5)
-
Step 950
950
#192836
oklch(27% 0.033 247.4)
#5783AE with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #7284B0 | 0.034 |
| Deuteranopia (no green cones) | #667BAD | 0.027 |
| Tritanopia (no blue cones) | #2D8D92 | 0.070 |
| Achromatopsia (no color) | #7F7F7F | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5783AE
#5783AE
oklch(59.6% 0.082 248.8)
- #9F7647
#9F7647
oklch(59.6% 0.082 69)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5783AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.003
- Dusty Blue #5A86AD ΔE 0.010
- Cool Blue #4984B8 ΔE 0.019
- Steel Blue #4682B4 ΔE 0.020
- Stormy Blue #507B9C ΔE 0.034
- Faded Blue #658CBB ΔE 0.035
- Cerulean #457B9D ΔE 0.039
- Blue NCS #118AB2 ΔE 0.046
Use #5783AE in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.