#5187FE
Closest named color: Dodger Blue (#1E90FF). oklch(64.7% 0.186 263.7), rgb(81, 135, 254).
Aa
Black text reads best on this color (6.24:1).
About this color
#5187FE is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.186 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.035 away. Black text reads best on it, at 6.24:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.24:1 |
| White text | 3.36:1 |
Values
| HEX | #5187FE |
| RGB | rgb(81, 135, 254) |
| HSL | hsl(221, 99%, 66%) |
| OKLCH | oklch(64.7% 0.186 263.7) |
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 #5187FE | 3.36:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #5187FE | 6.24:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #5187FE text on white | 3.36:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #5187FE text on black | 6.24:1 | AA | Lc -41.0 | 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
#C8DAFC
oklch(88.6% 0.051 263.2)
-
Step 300
300
#A2C1FC
oklch(80.9% 0.091 263)
-
Step 400
400
#719EFB
oklch(70.8% 0.145 263.6)
-
Step 500
500 (this color)
#5187FE
oklch(64.7% 0.186 263.7)
-
Step 600
600
#3168E7
oklch(55.6% 0.202 263.5)
-
Step 700
700
#2555C9
oklch(49.1% 0.188 263.8)
-
Step 800
800
#1F47A3
oklch(42.8% 0.156 263.5)
-
Step 900
900
#1E3C81
oklch(37.6% 0.122 263.8)
-
Step 950
950
#12244C
oklch(27% 0.078 263.8)
#5187FE 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) | #4894FF | 0.033 |
| Deuteranopia (no green cones) | #1E85FC | 0.035 |
| Tritanopia (no blue cones) | #00A3B6 | 0.152 |
| Achromatopsia (no color) | #8C8C8C | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5187FE
#5187FE
oklch(64.7% 0.186 263.7)
- #B48600
#B48600
oklch(64.7% 0.133 84.2)
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 #5187FE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.035
- Soft Blue #6488EA ΔE 0.035
- Cornflower #6A79F7 ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.047
- Clear Blue #247AFD ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.053
- Lavender Blue #8B88F8 ΔE 0.070
Use #5187FE 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.