#336FDE
Closest named color: Royal Blue (#4169E1). oklch(56.4% 0.181 261.4), rgb(51, 111, 222).
Aa
White text reads best on this color (4.69:1).
About this color
#336FDE is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.181 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.018 away. White text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.46:1 |
| White text | 4.69:1 |
Values
| HEX | #336FDE |
| RGB | rgb(51, 111, 222) |
| HSL | hsl(219, 72%, 54%) |
| OKLCH | oklch(56.4% 0.181 261.4) |
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 #336FDE | 4.69:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #336FDE | 4.46:1 | AA large text | Lc 31.9 | Non-text elements, placeholder text |
| #336FDE text on white | 4.69:1 | AA | Lc 72.1 | Content text, not long reading |
| #336FDE text on black | 4.46:1 | AA large text | Lc -29.5 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A3C2F6
oklch(81% 0.081 260.6)
-
Step 400
400
#72A0F2
oklch(70.8% 0.131 261.3)
-
Step 500
500
#4D85ED
oklch(63% 0.167 261.6)
-
Step 600
600 (this color)
#336FDE
oklch(56.4% 0.181 261.4)
-
Step 700
700
#235ABE
oklch(49.1% 0.168 261.2)
-
Step 800
800
#1F4A9A
oklch(42.7% 0.14 261.4)
-
Step 900
900
#1E3F7A
oklch(37.7% 0.108 261)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#336FDE 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) | #2A7CE2 | 0.033 |
| Deuteranopia (no green cones) | #006CDC | 0.025 |
| Tritanopia (no blue cones) | #008A9C | 0.142 |
| Achromatopsia (no color) | #747474 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #336FDE
#336FDE
oklch(56.4% 0.181 261.4)
- #986D00
#986D00
oklch(56.4% 0.116 81.2)
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 #336FDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.018
- Cerulean Blue #056EEE ΔE 0.031
- Neon Blue #4361EE ΔE 0.043
- Clear Blue #247AFD ΔE 0.052
- Azul #1D5DEC ΔE 0.054
- Windows Blue #3778BF ΔE 0.057
- Bright Blue #0165FC ΔE 0.057
- Warm Blue #4B57DB ΔE 0.058
Use #336FDE 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.