#5181FE
Closest named color: Cornflower (#6A79F7). oklch(63.5% 0.193 265.4), rgb(81, 129, 254).
Aa
Black text reads best on this color (5.92:1).
About this color
#5181FE is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.193 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.032 away. Black text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #5181FE |
| RGB | rgb(81, 129, 254) |
| HSL | hsl(223, 99%, 66%) |
| OKLCH | oklch(63.5% 0.193 265.4) |
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 #5181FE | 3.54:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #5181FE | 5.92:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #5181FE text on white | 3.54:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #5181FE text on black | 5.92:1 | AA | Lc -39.0 | 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A3C0FE
oklch(80.9% 0.094 265)
-
Step 400
400
#739CFE
oklch(70.6% 0.151 265.6)
-
Step 500
500 (this color)
#5181FE
oklch(63.5% 0.193 265.4)
-
Step 600
600
#3665EC
oklch(55.6% 0.21 265.4)
-
Step 700
700
#2A53CD
oklch(49.2% 0.195 265.4)
-
Step 800
800
#2345A6
oklch(42.8% 0.161 265.3)
-
Step 900
900
#203B83
oklch(37.6% 0.126 265.3)
-
Step 950
950
#13234D
oklch(26.9% 0.08 265.6)
#5181FE 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) | #3990FF | 0.039 |
| Deuteranopia (no green cones) | #0080FB | 0.043 |
| Tritanopia (no blue cones) | #009EB3 | 0.157 |
| Achromatopsia (no color) | #888888 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5181FE
#5181FE
oklch(63.5% 0.193 265.4)
- #AE8300
#AE8300
oklch(63.4% 0.13 85.3)
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 #5181FE, closest first.
No curated palette has a color within ΔE 0.04 of #5181FE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.032
- Clear Blue #247AFD ΔE 0.041
- Soft Blue #6488EA ΔE 0.043
- Dodger Blue #1E90FF ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.059
- Cornflower Blue #6495ED ΔE 0.066
- Medium Slate Blue #7B68EE ΔE 0.074
Use #5181FE 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.