#5187EE
Closest named color: Soft Blue (#6488EA). oklch(63.7% 0.165 262), rgb(81, 135, 238).
Aa
Black text reads best on this color (6.05:1).
About this color
#5187EE is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.165 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 6.05:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.05:1 |
| White text | 3.47:1 |
Values
| HEX | #5187EE |
| RGB | rgb(81, 135, 238) |
| HSL | hsl(219, 82%, 63%) |
| OKLCH | oklch(63.7% 0.165 262) |
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 #5187EE | 3.47:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #5187EE | 6.05:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #5187EE text on white | 3.47:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #5187EE text on black | 6.05:1 | AA | Lc -39.7 | 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
#73A0F1
oklch(70.8% 0.129 261.5)
-
Step 500
500 (this color)
#5187EE
oklch(63.7% 0.165 262)
-
Step 600
600
#346CDA
oklch(55.6% 0.179 262.1)
-
Step 700
700
#275ABD
oklch(49.2% 0.166 261.9)
-
Step 800
800
#214A99
oklch(42.7% 0.138 261.8)
-
Step 900
900
#203F7A
oklch(37.8% 0.107 261.8)
-
Step 950
950
#132547
oklch(26.9% 0.068 261.9)
#5187EE 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) | #5691F2 | 0.027 |
| Deuteranopia (no green cones) | #3B83EC | 0.023 |
| Tritanopia (no blue cones) | #009FAF | 0.136 |
| Achromatopsia (no color) | #8A8A8A | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5187EE
#5187EE
oklch(63.7% 0.165 262)
- #B28200
#B28200
oklch(63.7% 0.131 82.4)
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 #5187EE, 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 0.027
- Chefchaouen Blue #4895EF ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.045
- Cornflower #6A79F7 ΔE 0.045
- Clear Blue #247AFD ΔE 0.056
- Water Blue #0E87CC ΔE 0.068
Use #5187EE 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.