#5784C8
Closest named color: Cool Blue (#4984B8). oklch(61.1% 0.115 258.4), rgb(87, 132, 200).
Aa
Black text reads best on this color (5.53:1).
About this color
#5784C8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.115 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.030 away. Black text reads best on it, at 5.53:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #5784C8 |
| RGB | rgb(87, 132, 200) |
| HSL | hsl(216, 51%, 56%) |
| OKLCH | oklch(61.1% 0.115 258.4) |
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 #5784C8 | 3.79:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #5784C8 | 5.53:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #5784C8 text on white | 3.79:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #5784C8 text on black | 5.53:1 | AA | Lc -36.4 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ABC2E6
oklch(80.9% 0.057 259.3)
-
Step 400
400
#7EA2D9
oklch(70.7% 0.09 258.7)
-
Step 500
500 (this color)
#5784C8
oklch(61.1% 0.115 258.4)
-
Step 600
600
#4373BC
oklch(55.7% 0.126 258.6)
-
Step 700
700
#3460A2
oklch(49.1% 0.117 258.4)
-
Step 800
800
#2C4F83
oklch(42.8% 0.096 258.2)
-
Step 900
900
#284269
oklch(37.8% 0.074 258.3)
-
Step 950
950
#18273E
oklch(27.2% 0.048 258.7)
#5784C8 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) | #6889CB | 0.025 |
| Deuteranopia (no green cones) | #5A7EC7 | 0.016 |
| Tritanopia (no blue cones) | #00939D | 0.102 |
| Achromatopsia (no color) | #838383 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5784C8
#5784C8
oklch(61.1% 0.115 258.4)
- #A97A22
#A97A22
oklch(61.2% 0.115 78.3)
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 #5784C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.037
- Faded Blue #658CBB ΔE 0.038
- Off Blue #5684AE ΔE 0.041
- Dusty Blue #5A86AD ΔE 0.044
- Water Blue #0E87CC ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.046
- Windows Blue #3778BF ΔE 0.050
Use #5784C8 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.