#315FFA
Closest named color: Bright Blue (#0165FC). oklch(55.5% 0.236 265.9), rgb(49, 95, 250).
Aa
White text reads best on this color (5.06:1).
About this color
#315FFA is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.236 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Blue (#0165FC), ΔE 0.021 away. White text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.236) |
| Temperature | cool |
| Nearest name | Bright Blue (#0165FC) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #315FFA |
| RGB | rgb(49, 95, 250) |
| HSL | hsl(226, 95%, 59%) |
| OKLCH | oklch(55.5% 0.236 265.9) |
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 #315FFA | 5.06:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #315FFA | 4.14:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #315FFA text on white | 5.06:1 | AA | Lc 74.2 | Content text, not long reading |
| #315FFA text on black | 4.14:1 | AA large text | Lc -27.5 | Dividers and decoration only |
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 600.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFF
oklch(63.1% 0.197 265.8)
-
Step 600
600 (this color)
#315FFA
oklch(55.5% 0.236 265.9)
-
Step 700
700
#254DDA
oklch(49.1% 0.219 265.8)
-
Step 800
800
#1F40B0
oklch(42.6% 0.182 265.9)
-
Step 900
900
#1D398B
oklch(37.7% 0.141 265.6)
-
Step 950
950
#112252
oklch(27% 0.091 265.8)
#315FFA 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) | #0078FF | 0.056 |
| Deuteranopia (no green cones) | #0065F7 | 0.022 |
| Tritanopia (no blue cones) | #0088A4 | 0.183 |
| Achromatopsia (no color) | #6E6E6E | 0.237 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315FFA
#315FFA
oklch(55.5% 0.236 265.9)
- #916D00
#916D00
oklch(55.6% 0.114 85.6)
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 #315FFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Blue #0165FC ΔE 0.021
- Neon Blue #4361EE ΔE 0.025
- Azul #1D5DEC ΔE 0.027
- Electric Blue #0652FF ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.040
- Royal Blue #4169E1 ΔE 0.048
- Warm Blue #4B57DB ΔE 0.054
- Clear Blue #247AFD ΔE 0.062
Use #315FFA 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.