#5188F0
Closest named color: Soft Blue (#6488EA). oklch(64% 0.167 261.8), rgb(81, 136, 240).
Aa
Black text reads best on this color (6.12:1).
About this color
#5188F0 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.167 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.021 away. Black text reads best on it, at 6.12:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.12:1 |
| White text | 3.42:1 |
Values
| HEX | #5188F0 |
| RGB | rgb(81, 136, 240) |
| HSL | hsl(219, 84%, 63%) |
| OKLCH | oklch(64% 0.167 261.8) |
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 #5188F0 | 3.42:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #5188F0 | 6.12:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #5188F0 text on white | 3.42:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #5188F0 text on black | 6.12:1 | AA | Lc -40.2 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A4C1F6
oklch(80.8% 0.082 262.3)
-
Step 400
400
#73A0F2
oklch(70.8% 0.13 261.7)
-
Step 500
500 (this color)
#5188F0
oklch(64% 0.167 261.8)
-
Step 600
600
#326CDB
oklch(55.6% 0.181 261.7)
-
Step 700
700
#2559BE
oklch(49% 0.169 261.9)
-
Step 800
800
#204A9A
oklch(42.8% 0.139 261.7)
-
Step 900
900
#1F3F7A
oklch(37.8% 0.108 261.4)
-
Step 950
950
#132548
oklch(27% 0.069 262.3)
#5188F0 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) | #5692F4 | 0.027 |
| Deuteranopia (no green cones) | #3B84EE | 0.023 |
| Tritanopia (no blue cones) | #00A0B0 | 0.137 |
| Achromatopsia (no color) | #8B8B8B | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5188F0
#5188F0
oklch(64% 0.167 261.8)
- #B48300
#B48300
oklch(64.1% 0.132 82.1)
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 #5188F0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.021
- Dark Sky Blue #448EE4 ΔE 0.028
- Chefchaouen Blue #4895EF ΔE 0.034
- Dodger Blue #1E90FF ΔE 0.038
- Cornflower Blue #6495ED ΔE 0.043
- Cornflower #6A79F7 ΔE 0.046
- Clear Blue #247AFD ΔE 0.057
- Water Blue #0E87CC ΔE 0.071
Use #5188F0 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.