#5187FD
Closest named color: Soft Blue (#6488EA). oklch(64.6% 0.185 263.6), rgb(81, 135, 253).
Aa
Black text reads best on this color (6.23:1).
About this color
#5187FD is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.185 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.034 away. Black text reads best on it, at 6.23:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.23:1 |
| White text | 3.36:1 |
Values
| HEX | #5187FD |
| RGB | rgb(81, 135, 253) |
| HSL | hsl(221, 98%, 65%) |
| OKLCH | oklch(64.6% 0.185 263.6) |
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 #5187FD | 3.36:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #5187FD | 6.23:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #5187FD text on white | 3.36:1 | AA large text | Lc 60.8 | Content text, not long reading |
| #5187FD text on black | 6.23:1 | AA | Lc -40.9 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A3C1FC
oklch(81% 0.09 263.6)
-
Step 400
400
#719EFA
oklch(70.7% 0.144 263.4)
-
Step 500
500 (this color)
#5187FD
oklch(64.6% 0.185 263.6)
-
Step 600
600
#3168E7
oklch(55.6% 0.202 263.5)
-
Step 700
700
#2556C8
oklch(49.2% 0.186 263.5)
-
Step 800
800
#1F47A2
oklch(42.7% 0.154 263.4)
-
Step 900
900
#1E3D81
oklch(37.8% 0.121 263.3)
-
Step 950
950
#12244B
oklch(26.9% 0.076 263.5)
#5187FD 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) | #4994FF | 0.032 |
| Deuteranopia (no green cones) | #2084FB | 0.036 |
| Tritanopia (no blue cones) | #00A3B6 | 0.150 |
| Achromatopsia (no color) | #8C8C8C | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5187FD
#5187FD
oklch(64.6% 0.185 263.6)
- #B48500
#B48500
oklch(64.5% 0.133 83.5)
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 #5187FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.034
- Dodger Blue #1E90FF ΔE 0.035
- Cornflower #6A79F7 ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.046
- Clear Blue #247AFD ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.052
- Lavender Blue #8B88F8 ΔE 0.070
Use #5187FD 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.