#316FD2
Closest named color: Royal Blue (#4169E1). oklch(55.5% 0.166 259.5), rgb(49, 111, 210).
Aa
White text reads best on this color (4.84:1).
About this color
#316FD2 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.166 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.031 away. White text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #316FD2 |
| RGB | rgb(49, 111, 210) |
| HSL | hsl(217, 64%, 51%) |
| OKLCH | oklch(55.5% 0.166 259.5) |
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 #316FD2 | 4.84:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #316FD2 | 4.33:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #316FD2 text on white | 4.84:1 | AA | Lc 73.2 | Content text, not long reading |
| #316FD2 text on black | 4.33:1 | AA large text | Lc -28.5 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF9
oklch(93.7% 0.021 259.2)
-
Step 200
200
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F1
oklch(80.8% 0.074 259.3)
-
Step 400
400
#73A1EB
oklch(70.7% 0.12 259.6)
-
Step 500
500
#4E88E4
oklch(63.1% 0.152 259.3)
-
Step 600
600 (this color)
#316FD2
oklch(55.5% 0.166 259.5)
-
Step 700
700
#245CB6
oklch(49% 0.154 259.7)
-
Step 800
800
#1F4C93
oklch(42.7% 0.127 259.3)
-
Step 900
900
#1F4075
oklch(37.7% 0.099 259.5)
-
Step 950
950
#132645
oklch(27.1% 0.063 259.7)
#316FD2 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) | #3879D6 | 0.028 |
| Deuteranopia (no green cones) | #046BD0 | 0.025 |
| Tritanopia (no blue cones) | #008796 | 0.130 |
| Achromatopsia (no color) | #727272 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #316FD2
#316FD2
oklch(55.5% 0.166 259.5)
- #966A00
#966A00
oklch(55.5% 0.115 79.9)
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 #316FD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.031
- Windows Blue #3778BF ΔE 0.042
- Cerulean Blue #056EEE ΔE 0.046
- Mid Blue #276AB3 ΔE 0.050
- Neon Blue #4361EE ΔE 0.058
- French Blue #436BAD ΔE 0.058
- Warm Blue #4B57DB ΔE 0.062
- Azul #1D5DEC ΔE 0.064
Use #316FD2 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.