#5783AC
Closest named color: Off Blue (#5684AE). oklch(59.5% 0.08 247.6), rgb(87, 131, 172).
Aa
Black text reads best on this color (5.24:1).
About this color
#5783AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.080 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.004 away. Black text reads best on it, at 5.24:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #5783AC |
| RGB | rgb(87, 131, 172) |
| HSL | hsl(209, 34%, 51%) |
| OKLCH | oklch(59.5% 0.08 247.6) |
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 #5783AC | 4.00:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #5783AC | 5.24:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #5783AC text on white | 4.00:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #5783AC text on black | 5.24:1 | AA | Lc -34.4 | 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
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ADC3D9
oklch(80.8% 0.039 248.3)
-
Step 400
400
#82A5C6
oklch(70.8% 0.062 247.2)
-
Step 500
500 (this color)
#5783AC
oklch(59.5% 0.08 247.6)
-
Step 600
600
#4878A4
oklch(55.8% 0.087 247.6)
-
Step 700
700
#39648C
oklch(49% 0.081 248.1)
-
Step 800
800
#2F5272
oklch(42.7% 0.067 247.6)
-
Step 900
900
#2A445C
oklch(37.7% 0.052 247.5)
-
Step 950
950
#192836
oklch(27% 0.033 247.4)
#5783AC 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) | #7284AE | 0.034 |
| Deuteranopia (no green cones) | #677BAB | 0.027 |
| Tritanopia (no blue cones) | #2F8D91 | 0.068 |
| Achromatopsia (no color) | #7F7F7F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5783AC
#5783AC
oklch(59.5% 0.08 247.6)
- #9E7549
#9E7549
oklch(59.3% 0.079 67.3)
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 #5783AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.004
- Dusty Blue #5A86AD ΔE 0.010
- Steel Blue #4682B4 ΔE 0.021
- Cool Blue #4984B8 ΔE 0.022
- Stormy Blue #507B9C ΔE 0.032
- Faded Blue #658CBB ΔE 0.037
- Cerulean #457B9D ΔE 0.037
- Grey Blue #647D8E ΔE 0.046
Use #5783AC 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.